Version history

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  1. Live 6ed23bb03209
    5/17/2026, 4:35:28 PM
    Content snapshot
    {
      "scope": "mouse primary motor cortex (M1) layer 5B PT and IT projection neurons",
      "claim_text": "In mouse motor cortex L5B, optogenetic retrograde rabies-virus-encoded ChR2 plus paired recording shows that within-class (recurrent) excitatory connections exist among corticospinal (PT) neurons and among callosally projecting corticostriatal (IT) neurons, but cross-class connectivity is extraordinarily asymmetric and essentially unidirectional from corticostriatal IT to corticospinal PT (IT→PT) — establishing the hierarchical IT→PT motif in mouse M1.",
      "raw_fields": {
        "n": 0,
        "doi": "10.1523/jneurosci.4759-11.2012",
        "claim": "In mouse motor cortex L5B, optogenetic retrograde rabies-virus-encoded ChR2 plus paired recording shows that within-class (recurrent) excitatory connections exist among corticospinal (PT) neurons and among callosally projecting corticostriatal (IT) neurons, but cross-class connectivity is extraordinarily asymmetric and essentially unidirectional from corticostriatal IT to corticospinal PT (IT→PT) — establishing the hierarchical IT→PT motif in mouse M1.",
        "cite_key": "Kiritani2012",
        "evidence": "Retrograde rabies-virus-delivered ChR2 in identified projection classes combined with paired patch-clamp recordings in mouse motor cortex slices.",
        "effect_size": "qualitative — asymmetric, essentially unidirectional IT→PT cross-class connectivity in L5B",
        "text_access": "abstract_only",
        "study_system": "mouse primary motor cortex (M1) layer 5B PT and IT projection neurons",
        "argument_role": "supporting",
        "replication_status": "independently_replicated",
        "claim_source_sentence": "Both corticospinal and callosally projecting corticostriatal neurons in layer 5B formed within-class (recurrent) connections, with higher connection probability among corticostriatal than among corticospinal neurons. In contrast, across-class connectivity was extraordinarily asymmetric, essentially unidirectional from corticostriatal to co",
        "source_provenance_status": "non_substring_match",
        "replication_evidence_dois": [
          "10.1523/JNEUROSCI.4023-14.2015",
          "10.1523/JNEUROSCI.4287-14.2015"
        ],
        "effect_size_source_sentence": "across-class connectivity was extraordinarily asymmetric, essentially unidirectional from corticostriatal to co"
      },
      "section_id": "section_07",
      "source_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewRecurrence/blob/79ce062d54a924ce05953ec90aa9d26044d2b48f/evidence/section_07_evidence_package.json",
      "effect_size": "qualitative — asymmetric, essentially unidirectional IT→PT cross-class connectivity in L5B",
      "review_repo": "ComputationalReviewRecurrence",
      "section_ref": "wiki_page:computationalreviewrecurrence-07-celltype-motifs",
      "source_kind": "review_finding",
      "source_path": "evidence/section_07_evidence_package.json",
      "source_refs": [
        "paper:paper-e1291622a820"
      ],
      "source_span": "Both corticospinal and callosally projecting corticostriatal neurons in layer 5B formed within-class (recurrent) connections, with higher connection probability among corticostriatal than among corticospinal neurons. In contrast, across-class connectivity was extraordinarily asymmetric, essentially unidirectional from corticostriatal to co",
      "study_system": "mouse primary motor cortex (M1) layer 5B PT and IT projection neurons",
      "evidence_refs": [
        {
          "ref": "paper:paper-e1291622a820"
        }
      ],
      "section_title": "7. Cell-type-specific E→E motifs in mouse — IT vs PT vs CT pyramidal projection classes; L5 thick-tufted recurrence; Patch-seq and Allen mouse-cortex taxonomy intersections; transcriptomic-type-specific connectivity",
      "source_policy": {
        "mode": "public_source_pointer_with_short_context",
        "notes": [
          "Local review repositories are read-only inputs.",
          "SciDEX stores paper metadata, structured evidence, file pointers, and short citation contexts; it does not copy full review prose."
        ],
        "source_commit_sha": "79ce062d54a924ce05953ec90aa9d26044d2b48f",
        "source_repository_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewRecurrence"
      },
      "evidence_summary": "Retrograde rabies-virus-delivered ChR2 in identified projection classes combined with paired patch-clamp recordings in mouse motor cortex slices.",
      "review_bundle_ref": "analysis_bundle:ab-d9c479db9be9",
      "replication_status": "independently_replicated",
      "review_package_ref": "analysis_bundle:ab-d9c479db9be9",
      "source_artifact_ref": "wiki_page:computationalreviewrecurrence-07-celltype-motifs",
      "origin_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewRecurrence/blob/79ce062d54a924ce05953ec90aa9d26044d2b48f/evidence/section_07_evidence_package.json",
      "commit_sha": "79ce062d54a924ce05953ec90aa9d26044d2b48f",
      "created_by": "persona-jerome-lecoq-gbo-neuroscience",
      "repository_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewRecurrence"
    }