Synthesis: Reassessing the Generalized Loop Model 25 Years On

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^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference} A quarter century after ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference} argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference} The framing of this score-card is anchored in a single question: did the ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference} programme — to recast the cerebral hemispheres as a small set of iterated, behaviourally meaningful reentrant loops — find empirical purchase, or has it been replaced by some other organising motif? The answer the body sections collectively give is neither “yes” nor “no” but a structured “yes, with edits”: the architectural skelet...
^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference} Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}0 Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}1 Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}2 Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}3 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}4. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}5 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}6. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}7 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}8. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}9 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}0. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}1 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}2. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}3 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}4. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}5 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}6. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}7 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}8. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}9 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}0. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}1 Thalamic feedback closes the loop. Held up but with a quantitative caveat. The motor-thalamic literature reviewed in {ref}sec-thalamic-feedback confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}2. Where 1986–...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}3 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}4’s five-loop scheme, the ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}5 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}6 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}7, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}8, and tractography giving int...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}9 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0’s five-loop scheme, the ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1 and ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4, and tractography giving int...
^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6’s five-loop scheme, the ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7 and ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{2Citationpaper:paper-3a2a266bc9c8Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0, and tractography giving int...
^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2’s five-loop scheme, the ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3 and ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6, and tractography giving int...
^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8’s five-loop scheme, the ^{3Citationpaper:paper-313a952326b2Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9 and ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2, and tractography giving int...
^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4’s five-loop scheme, the ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5 and ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8, and tractography giving int...
^{4Citationpaper:paper-f2a353d66b87Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0’s five-loop scheme, the ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1 and ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4, and tractography giving int...
^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6’s five-loop scheme, the ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7 and ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{5Citationpaper:paper-b59a62e45b37Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0, and tractography giving int...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2’s five-loop scheme, the ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3 and ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6, and tractography giving int...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8’s five-loop scheme, the ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9 and ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}0 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}1, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}2, and tractography giving int...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}3 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}4’s five-loop scheme, the ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}5 and ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}6 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}7, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}8, and tractography giving int...
^{6Citationpaper:paper-79995db40fc1Triple descending projection (cortical → striatal → pallidal). Held up. The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...content/sec_16_synthesis.md:line 13Open reference}9 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}00’s five-loop scheme, the ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}01 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}02 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}03, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}04, and tractography giving int...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}05 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}06’s five-loop scheme, the ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}07 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}08 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}09, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}10, and tractography giving int...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}11 Loops tile the entire hemisphere. Refined. Six surveys are now the load-bearing data: ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}12’s five-loop scheme, the ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}13 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}14 extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}15, mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}16, and tractography giving int...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}17 The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}18 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}19 argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}20 The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}21 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}22 argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}23 The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}24 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}25 argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}26 The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}27 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}28 argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}29 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}30 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}31 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}32 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}33 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}34 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}35 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}36 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}37 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}38 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}39 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}40 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}41 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}42 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}43 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}44 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}45 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}46 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}47 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}48 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}49 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}50 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}51 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}52 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}53 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}54 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}55 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}56 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}57 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}58 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}59 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}60 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}61 The behavior-control column as a motor target of the descending loop. Refined. ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}62 argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal “behavior-control column” — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}63 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}64 updated the catalogue with the molecular and connectional e...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}65 Topographic parallelism across the descending sheet. Contested. This is the corollary on which 25 years of evidence have moved most. The strict parallel-segregation claim of ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}66 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}67 predicts that motor, associative, and limbic information remain separable from cortex through striatum, pallidum, and back. The reframings catalogued in {ref}sec-parallel-loops are converging on a quantitativ...
^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}68 Topographic parallelism across the descending sheet. Contested. This is the corollary on which 25 years of evidence have moved most. The strict parallel-segregation claim of ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}69 and ^{1Citationpaper:paper-14f182b5d5c4A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...content/sec_16_synthesis.md:line 5Open reference}70 predicts that motor, associative, and limbic information remain separable from cortex through striatum, pallidum, and back. The reframings catalogued in {ref}sec-parallel-loops are converging on a quantitativ...
... 134 additional anchors in refs_json

References

[Swanson2000] paper:paper-14f182b5d5c4 “A quarter century after [Swanson2000] argued that the cerebral hemispheres are organized around an iterated cortico–striato–pallido–thalamo–cortical (CBGTC) reentrant motif — and that this same motif can be read into association cortex, hypothalamus, and the developmental sequence of the forebrain — the question is no longer whether loops exist but how their boundaries, granularity, and computational role survive 25...”
[Selemon1985] paper:paper-3a2a266bc9c8 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Malach1986] paper:paper-313a952326b2 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Parthasarathy1992] paper:paper-f2a353d66b87 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Eblen1995] paper:paper-b59a62e45b37 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Foster2021] paper:paper-79995db40fc1 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Hintiryan2016] paper:paper-8d85b2b35d13 “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Hunnicutt2016] paper:paper-054c1c11810a “**Triple descending projection (cortical → striatal → pallidal). Held up.** The claim that frontal cortex sends a topographically ordered descending sheet through the striatum to the pallidum, with a parallel cortico-subthalamic shortcut, is now one of the better-replicated propositions in mammalian neuroanatomy. PHA-L, biotinylated dextran amine, and viral tracing in rodent and primate [Selemon1985,Malach1986,Parth...”
[Jones2002] paper:paper-5f06900baf65 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Sherman2007] paper:paper-fea010492a83 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Sherman2011] paper:paper-bf28df20933d “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Halassa2019] paper:paper-90f540b51696 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Theyel2009] paper:paper-0d8e30351382 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Bosch2013] paper:paper-b2cf51f8a205 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Alonso2023] paper:paper-e5821091a2f6 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Koster2024] paper:paper-2c301d41f532 “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Sherman2016] paper:paper-ef147548c82a “**Thalamic feedback closes the loop. Held up but with a quantitative caveat.** The motor-thalamic literature reviewed in {ref}`sec-thalamic-feedback` confirms that pallidal and nigral output reaches frontal cortex via VL, VA, VAmc, MD, and intralaminar nuclei, and that these terminals contact the same dendritic trees as cortico-cortical feedback [Jones2002,Sherman2007,Sherman2011,Halassa2019,Theyel2009]. Where 1986–...”
[Alexander1986] paper:paper-5efeb34044d1 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Mega1994] paper:paper-c93817da8b12 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Tekin2002] paper:paper-b0af7a0183ae “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Buckner2011] paper:paper-6544542f1cd4 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Choi2012] paper:paper-e08117ec6691 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Jarbo2015] paper:paper-f56e82368b6f “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Caminiti2021] paper:paper-aac909a4fac6 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Swanson2005] paper:paper-77ff2c12732a “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Risold1997] paper:paper-d0f91beb13d2 “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Watts2015] paper:paper-7db9928f9fea “**Loops tile the entire hemisphere. Refined.** Six surveys are now the load-bearing data: [Alexander1986]'s five-loop scheme, the [Mega1994] and [Tekin2002] extensions to neuropsychiatric circuits, resting-state partitions of striatum into ≥5 cortical zones [Buckner2011,Choi2012], mesoscale tracing yielding 14–36 striatal/pallidal domains in mouse [Foster2021,Hintiryan2016,Hunnicutt2016], and tractography giving int...”
[Swanson2019b] paper:paper-bd2011cae009 “The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. [Swanson2019b] and [Swanson2024] argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...”
[Swanson2024] paper:paper-a426b2363379 “The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. [Swanson2019b] and [Swanson2024] argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...”
[Hahn2022] paper:paper-b52d44bfc629 “The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. [Swanson2019b] and [Swanson2024] argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...”
[Biag2011] paper:paper-e3e1f838ee6b “The hypothalamic extension of this claim deserves explicit reading because it is the most architecturally ambitious. [Swanson2019b] and [Swanson2024] argue that the cerebral hemispheres and hypothalamus form a single nervous-system-wide control architecture in which limbic and behaviour-control columns are not auxiliary downstream targets but constituent loop nodes. The connectional evidence supports the architectur...”
[Swanson2025] paper:paper-a6f7c9c666fc “**The behavior-control column as a motor target of the descending loop. Refined.** [Swanson2000] argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal "behavior-control column" — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and [Swanson2024] and [Swanson2025] updated the catalogue with the molecular and connectional e...”
[Sakurai1998] paper:paper-a38812b66e0d “**The behavior-control column as a motor target of the descending loop. Refined.** [Swanson2000] argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal "behavior-control column" — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and [Swanson2024] and [Swanson2025] updated the catalogue with the molecular and connectional e...”
[DeLecea1998] paper:paper-82deecb9e23c “**The behavior-control column as a motor target of the descending loop. Refined.** [Swanson2000] argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal "behavior-control column" — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and [Swanson2024] and [Swanson2025] updated the catalogue with the molecular and connectional e...”
[Reis2023] paper:paper-ba1a25f2c350 “**The behavior-control column as a motor target of the descending loop. Refined.** [Swanson2000] argued that hypothalamic somatomotor, ingestive, defensive, and reproductive nuclei form a longitudinal "behavior-control column" — the motor target through which cortico-striato-pallidal output gates innate motor programmes — and [Swanson2024] and [Swanson2025] updated the catalogue with the molecular and connectional e...”
[Joel1994] paper:paper-f315121cdd64 “**Topographic parallelism across the descending sheet. Contested.** This is the corollary on which 25 years of evidence have moved most. The strict parallel-segregation claim of [Alexander1986] and [Joel1994] predicts that motor, associative, and limbic information remain separable from cortex through striatum, pallidum, and back. The reframings catalogued in {ref}`sec-parallel-loops` are converging on a quantitativ...”

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