Evidence map›Paper›PMID 33888604›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Engram Size Varies with Learning and Reflects Memory Content and Precision.

Jessica Leake, Raphael Zinn, Laura H Corbit, Michael S Fanselow, Bryce Vissel

Open access · hybridAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

19 citing papers in PubMed, 58 citations in OpenAlex.

  1. Lasting aversive consequences of a single dose of 4-hydroxytamoxifen.bioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Chronic stress enhances threat responding and impacts fear extinction.Learning & memory (Cold Spring Harbor, N.Y.) · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Microglial plasticity across development mediates infantile amnesia.bioRxiv : the preprint server for biology · 2025
    Article
  8. Inhibitory Neurons Marked by the Connectivity Molecule Kirrel3 Regulate Memory Precision.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Identification of a stress-responsive subregion of the basolateral amygdala in male rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Article
  13. Article
  14. Article
  15. Molecular tools to capture active neural circuits.Frontiers in neural circuits · 2024
    Review
  16. Review
  17. Article
  18. Locus coeruleus input-modulated reactivation of dentate gyrus opioid-withdrawal engrams promotes extinction.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Article
  19. 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

5 authors at 3 institutions in 3 countries.

Jessica LeakeCentre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
Raphael ZinnCentre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
Laura H CorbitDepartment of Psychology, University of Toronto, Toronto, Ontario M5S 1A1, Canada.
Michael S FanselowStaglin Center for Brain and Behavioral Health, University of California Los Angeles, Los Angeles, California 90095.ORCID 0000-0002-3850-5966
Bryce VisselCentre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology Sydney, Sydney, New South Wales 2007, Australia brycevissel@gmail.com.
University of Technology Sydney · AUUniversity of California, Los Angeles · USUniversity of Toronto · CA

Funding

Contextual Fear Differentiation, Sex Differences and AcetylcholineR01MH062122 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FANSELOW, MICHAEL S · 2001 to 2021
$7.3M
NIMH NIH HHS R01 MH062122
6 · The paper itself

Abstract

Memories are rarely acquired under ideal conditions, rendering them vulnerable to profound omissions, errors, and ambiguities. Consistent with this, recent work using context fear conditioning has shown that memories formed after inadequate learning time display a variety of maladaptive properties, including overgeneralization to similar contexts. However, the neuronal basis of such poor learning and memory imprecision remains unknown. Using c-fos to track neuronal activity in male mice, we examined how these learning-dependent changes in context fear memory precision are encoded in hippocampal ensembles. We found that the total number of c-fos-encoding cells did not correspond with learning history but instead more closely reflected the length of the session immediately preceding c-fos measurement. However, using a c-fos-driven tagging method (

Indexed as

AnimalsConditioning, ClassicalDentate GyrusDiscrimination, PsychologicalEstrogen AntagonistsFearHippocampusLearningMaleMemoryMiceMice, Inbred C57BLModels, PsychologicalNeuronsProto-Oncogene Proteins c-fosTamoxifenafimoxifeneEstrogen AntagonistsProto-Oncogene Proteins c-fosTamoxifenc-foscontextengramfear conditioninghippocampusmemory

Identifiers

PMID33888604
PMCPMC8176757
OpenAlexW3155886072

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.