Evidence map›Paper›PMID 37326250›Full record

ReviewDevelopmental neurobiology

Development of the hippocampal CA2 region and the emergence of social recognition.

Emma J Diethorn, Elizabeth Gould

Open access · hybridAbstract readReview
In one paragraph

Review in Developmental neurobiology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

14 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Article
  3. New neurons flatten social hierarchies.Scientific reports · 2026
    Article
  4. The tyrosine phosphatase STEP is a developmental suppressor of synaptogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Critical Periods and Beyond: Dynamic Functions of Perineuronal Nets in Cognition, Development, and Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  12. Developmental CA2 perineuronal net reduction restores social memory inbioRxiv : the preprint server for biology · 2025
    Article
  13. Article
  14. Review
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

2 authors at 1 institution in 1 country.

Emma J DiethornPrinceton Neuroscience Institute, Princeton University, Princeton, New Jersey, USA.ORCID 0000-0002-9859-2440
Elizabeth GouldPrinceton Neuroscience Institute, Princeton University, Princeton, New Jersey, USA.ORCID 0000-0002-8358-0236
Princeton University · US

Funding

Perineuronal nets, hippocampal plasticity, and autism spectrum disorder.R01MH118631 · NIMH · PRINCETON UNIVERSITY · PI Elizabeth Gould · 2019 to 2026
$3.1M
NIMH NIH HHS R01 MH118631NIMH NIH HHS R01MH118631-01
6 · The paper itself

Abstract

Social memories formed in early life, like those for family and unrelated peers, are known to contribute to healthy social interactions throughout life, although how the developing brain supports social memory remains relatively unexplored. The CA2 subregion of the hippocampus is involved in social memory function, but most literature on this subject is restricted to studies of adult rodents. Here, we review the current literature on the embryonic and postnatal development of hippocampal subregion CA2 in mammals, with a focus on the emergence of its unusual molecular and cellular characteristics, including its notably high expression of plasticity-suppressing molecules. We also consider the connectivity of the CA2 with other brain areas, including intrahippocampal regions, such as the dentate gyrus, CA3, and CA1 regions, and extrahippocampal regions, such as the hypothalamus, ventral tegmental area, basal forebrain, raphe nuclei, and the entorhinal cortex. We review developmental milestones of CA2 molecular, cellular, and circuit-level features that may contribute to emerging social recognition abilities for kin and unrelated conspecifics in early life. Lastly, we consider genetic mouse models related to neurodevelopmental disorders in humans in order to survey evidence about whether atypical formation of the CA2 may contribute to social memory dysfunction.

Indexed as

CA2 Region, HippocampalHippocampusAnimalsCA1 Region, HippocampalEntorhinal CortexHumansMammalsMiceRecognition, PsychologyCA2 regiondevelopmenthippocampussocial memory

Identifiers

PMID37326250
PMCPMC10529477
OpenAlexW4380871771

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.