Evidence map›Paper›PMID 23960207›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2015

Systematic, cross-cortex variation in neuron numbers in rodents and primates.

Christine J Charvet, Diarmuid J Cahalane, Barbara L Finlay

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
7.1field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

74 citing papers in PubMed, 143 citations in OpenAlex.

  1. Hierarchical Flows of Human Cortical Activity.bioRxiv : the preprint server for biology · 2026
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  3. Geometric influences on the regional organization of the mammalian brain.bioRxiv : the preprint server for biology · 2025
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  8. Review
  9. The flattening of spacetime hierarchy of theNational science review · 2024
    Article
  10. Molecular signatures of cortical expansion in the human fetal brain.bioRxiv : the preprint server for biology · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. Advances in the Electrophysiological Recordings of Long-Term Potentiation.International journal of molecular sciences · 2023
    Review
  15. Article
  16. Review
  17. Review
  18. Article
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  20. Article

14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Christine J CharvetBehavioral and Evolutionary Neuroscience Group, Department of Psychology and.
Diarmuid J CahalaneCenter for Applied Mathematics, Cornell University, Ithaca, NY 14853, USA.
Barbara L FinlayBehavioral and Evolutionary Neuroscience Group, Department of Psychology and.
Cornell University · US

Funding

The Developmental Origins of Cerebral Cortical Expansion in Evolution & DisorderF32HD067011 · NICHD · CORNELL UNIVERSITY · PI CHARVET, CHRISTINE J · 2011 to 2013
$148k
NICHD NIH HHS F32HD067011
6 · The paper itself

Abstract

Uniformity, local variability, and systematic variation in neuron numbers per unit of cortical surface area across species and cortical areas have been claimed to characterize the isocortex. Resolving these claims has been difficult, because species, techniques, and cortical areas vary across studies. We present a stereological assessment of neuron numbers in layers II-IV and V-VI per unit of cortical surface area across the isocortex in rodents (hamster, Mesocricetus auratus; agouti, Dasyprocta azarae; paca, Cuniculus paca) and primates (owl monkey, Aotus trivigratus; tamarin, Saguinus midas; capuchin, Cebus apella); these chosen to vary systematically in cortical size. The contributions of species, cortical areas, and techniques (stereology, "isotropic fractionator") to neuron estimates were assessed. Neurons per unit of cortical surface area increase across the rostro-caudal (RC) axis in primates (varying by a factor of 1.64-2.13 across the rostral and caudal poles) but less in rodents (varying by a factor of 1.15-1.54). Layer II-IV neurons account for most of this variation. When integrated into the context of species variation, and this RC gradient in neuron numbers, conflicts between studies can be accounted for. The RC variation in isocortical neurons in adulthood mirrors the gradients in neurogenesis duration in development.

Indexed as

AnimalsAotus trivirgatusCebusCell CountCuniculidaeDasyproctidaeMesocricetusNeocortexNeurogliaNeuronsSaguinusSpecies Specificitycortexdevelopmentgradientnumbers

Identifiers

PMID23960207
PMCPMC4259279
OpenAlexW2109105547

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.