Number of SST subtypes identified by different classification methods

Transcriptomic methods resolve substantially more SST subtypes (11 supertypes) than morphological/electrophysiological analysis (3 groups), highlighting the modality-dependent nature of cell type number. Not all transcriptomic supertypes are morphologically distinguishable.

{
  "papers": [
    {
      "n": 59,
      "doi": "10.3389/fncir.2010.00012",
      "value": "3",
      "method": "morphological and electrophysiological cluster analysis",
      "metric": "Number of SST subtypes",
      "cite_key": "McGarry2010",
      "ci_or_error": null,
      "text_access": "fulltext",
      "n_definition": "GFP-positive neurons characterized by whole-cell recording and reconstruction",
      "scope_region": "mouse somatosensory cortex",
      "study_system": "mouse somatosensory cortex (GIN line)",
      "taxonomic_level": "morphological subtype",
      "scope_population": "somatostatin-positive interneurons",
      "value_source_sentence": "Unsupervised cluster analysis revealed a group comprised of the well-known Martinotti cells, as well as two other sub-groups of SOM-positive neurons that, to our knowledge, have not yet been described."
    },
    {
      "n": 1300000,
      "doi": "10.1016/j.cell.2021.04.021",
      "value": "11",
      "method": "scRNA-seq transcriptomic clustering",
      "metric": "Number of SST supertypes",
      "cite_key": "Yao2021",
      "ci_or_error": null,
      "text_access": "fulltext",
      "n_definition": "total cells profiled",
      "scope_region": "entire mouse isocortex",
      "study_system": "mouse isocortex",
      "taxonomic_level": "transcriptomic supertype",
      "scope_population": "Sst subclass GABAergic neurons",
      "value_source_sentence": "In the MGE neighborhood, the Sst Chodl subclass remains as one group (representing long-range projecting Sst cells); the Sst and Pvalb subclasses are divided into 11 and 3 supertypes, respectively (Fig."
    }
  ],
  "comparison_id": "fig_sec2_sst_subtypes",
  "comparison_name": "Number of SST subtypes identified by different classification methods",
  "comparison_type": "cross-method resolution",
  "what_it_reveals": "Transcriptomic methods resolve substantially more SST subtypes (11 supertypes) than morphological/electrophysiological analysis (3 groups), highlighting the modality-dependent nature of cell type number. Not all transcriptomic supertypes are morphologically distinguishable.",
  "homogeneity_check": "Different methods, scales, and scope. Morphological study: n=59 from one cortical area. Transcriptomic study: ~1.3M cells pan-cortex. The taxonomic_level differs: morphological subtypes vs transcriptomic supertypes. Numbers are not directly comparable but the discrepancy illustrates the method-dependence of type counts.",
  "suggested_plot_type": "comparison_bar"
}

[
  "paper:paper-4dfe44516146",
  "paper:paper-bf344c0a6a03"
]

{
  "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": "934e0675cc6d5ffd9978a4a9883b31166ce000e2",
  "source_repository_url": "https://github.com/AllenNeuralDynamics/ComputationReviewInhibitory"
}