PV Interneuron Tuning Selectivity Across Sensory Cortical Areas

PV interneuron tuning selectivity varies systematically across sensory cortical areas and species: broadly tuned in mouse V1, well-tuned in auditory cortex, and layer-dependent in primate V1. This suggests PV neurons pool local input nonselectively, with their apparent selectivity reflecting the local circuit architecture rather than intrinsic tuning mechanisms.

{
  "papers": [
    {
      "n": 0,
      "doi": "10.1038/nature11312",
      "value": "broadly tuned; PV activation sharpens nearby neuron tuning",
      "method": "multichannel extracellular recording + optogenetics",
      "metric": "PV+ orientation selectivity in visual cortex",
      "n_analyzed": null,
      "ci_or_error": null,
      "text_access": "fulltext",
      "n_definition": "recorded neurons",
      "scope_region": "visual cortex V1",
      "study_system": "mouse, V1, optogenetics + silicon probes",
      "taxonomic_level": "PV+ interneurons",
      "scope_population": "PV+ interneurons",
      "value_source_sentence": "elevated spiking of PV+ interneurons markedly sharpened orientation tuning and enhanced direction selectivity of nearby neurons",
      "experimental_conditions": "ChR2 activation of PV+ cells"
    },
    {
      "n": 0,
      "doi": "10.1523/JNEUROSCI.0663-13.2013",
      "value": "well-tuned for frequency; shallower gain than PV- neurons",
      "method": "extracellular recording + optogenetic tagging",
      "metric": "PV+ frequency selectivity in auditory cortex",
      "n_analyzed": null,
      "ci_or_error": null,
      "text_access": "fulltext",
      "n_definition": "recorded neurons",
      "scope_region": "auditory cortex",
      "study_system": "mouse, auditory cortex, optogenetic tagging",
      "taxonomic_level": "PV+ interneurons",
      "scope_population": "PV+ interneurons",
      "value_source_sentence": "auditory cortical PV+ neurons were well tuned for frequency, although very tightly tuned PV+ cells were uncommon",
      "experimental_conditions": "ChR2 optogenetic identification"
    },
    {
      "n": 0,
      "doi": "10.1093/cercor/bhx261",
      "value": "~10% of PV population mediates prominent effects; strong lateral inhibition",
      "method": "laminar recording + optogenetics",
      "metric": "PV+ spatiotemporal effects in somatosensory cortex",
      "n_analyzed": null,
      "ci_or_error": null,
      "text_access": "abstract_only",
      "n_definition": "recorded neurons",
      "scope_region": "somatosensory barrel cortex",
      "study_system": "mouse, barrel cortex S1, optogenetics",
      "taxonomic_level": "PV+ interneurons",
      "scope_population": "PV+ interneurons",
      "value_source_sentence": "only a minor fraction (~10%) of the local PV population comprising no more than a few hundred neurons is optogenetically modulated, mediating the observed prominent and widespread effects",
      "experimental_conditions": "PV inhibition and activation"
    },
    {
      "n": 0,
      "doi": "10.21203/rs.3.rs-9117440/v1",
      "value": "gain control in granular layer; tuned suppression in extra-granular layers",
      "method": "laminar extracellular recording + optogenetics",
      "metric": "PV+ function in primate V1 across layers",
      "n_analyzed": null,
      "ci_or_error": null,
      "text_access": "abstract_only",
      "n_definition": "recorded neurons",
      "scope_region": "visual cortex V1 (primate)",
      "study_system": "marmoset, V1, bidirectional optogenetics",
      "taxonomic_level": "PV+ interneurons",
      "scope_population": "PV+ interneurons",
      "value_source_sentence": "in the granular layer, PV+ cells implement divisive/multiplicative linear gain control, whereas in extra-granular layers they exert tuned nonlinear suppression that enhances orientation tuning",
      "experimental_conditions": "laminar optogenetic manipulation"
    }
  ],
  "comparison_id": "pv-tuning-selectivity-across-sensory-areas",
  "comparison_name": "PV Interneuron Tuning Selectivity Across Sensory Cortical Areas",
  "comparison_type": "cross-region comparison",
  "what_it_reveals": "PV interneuron tuning selectivity varies systematically across sensory cortical areas and species: broadly tuned in mouse V1, well-tuned in auditory cortex, and layer-dependent in primate V1. This suggests PV neurons pool local input nonselectively, with their apparent selectivity reflecting the local circuit architecture rather than intrinsic tuning mechanisms.",
  "homogeneity_check": {
    "caveats": [
      "Different sensory modalities (visual, auditory, somatosensory) with different stimulus feature spaces",
      "Mouse vs marmoset species comparison for visual cortex",
      "Different selectivity metrics across studies (orientation vs frequency vs spatial)"
    ],
    "n_definition_uniform": "true",
    "scope_region_uniform": "false",
    "taxonomic_level_uniform": "true",
    "scope_population_uniform": "true"
  },
  "suggested_plot_type": "grouped bar"
}

[
  "paper:paper-7788d49563cb",
  "paper:paper-89a90cbbebc9",
  "paper:paper-97e6822b54d9",
  "paper:paper-f450ef113660"
]

{
  "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": "df9fc7e8d455b084152c9d713558dae0013cef21",
  "source_repository_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewPV"
}