Evidence map›Paper›PMID 30423499›Full record

ReviewCurrent opinion in neurobiology2019

Neuronal competition: microcircuit mechanisms define the sparsity of the engram.

Priyanka Rao-Ruiz, Julia Yu, Steven A Kushner, Sheena A Josselyn

Abstract readReview
In one paragraph

Review in Current opinion in neurobiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
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

44 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Modular inhibitory coding in binary networks.Frontiers in network physiology · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Beyond neurons and spikes:Cognitive neurodynamics · 2024
    Review
  14. Article
  15. Dynamics of mature myelin.Nature neuroscience · 2024
    Review
  16. Article
  17. Article
  18. Article
  19. Context and Time Regulate Fear Memory Consolidation and Reconsolidation in the Basolateral Amygdala Complex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  20. Article
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

4 authors.

Priyanka Rao-RuizDept. of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, The Netherlands.
Julia YuProgram in Neurosciences & Mental Health, Hospital for Sick Children, 555 University Ave. Toronto, ON, M5G 1X8, Canada; Dept. of Physiology, University of Toronto, Toronto, ON, M5G 1X8, Canada.
Steven A KushnerDept. of Psychiatry, Erasmus MC University Medical Center, Rotterdam, The Netherlands. Electronic address: s.kushner@erasmusmc.nl.
Sheena A JosselynProgram in Neurosciences & Mental Health, Hospital for Sick Children, 555 University Ave. Toronto, ON, M5G 1X8, Canada; Dept. of Physiology, University of Toronto, Toronto, ON, M5G 1X8, Canada; Dept. of Psychology, University of Toronto, Toronto, ON, M5G 1X8, Canada; Institute of Medical Sciences, University of Toronto, Toronto, ON, M5G 1X8, Canada; Brain, Mind & Consciousness Program, Canadian Institute for Advanced Research (CIFAR), Toronto, Ontario M5G 1M1, Canada. Electronic address: Sheena.Josselyn@SickKids.ca.

Funding

The Role of Neuronal Ensembles Supporting Auditory Fear Conditioning (Engrams) in the Amygdala in Memory Formation, Generalization and ExtinctionR01MH119421 · NIMH · HOSPITAL FOR SICK CHLDRN (TORONTO) · PI FRANKLAND, PAUL, JOSSELYN, SHEENA A · 2019 to 2023
$1.7M
CIHRNIMH NIH HHS R01 MH119421
6 · The paper itself

Abstract

Extensive work in computational modeling has highlighted the advantages for employing sparse yet distributed data representation and storage Kanerva (1998), properties that extend to neuronal networks encoding mnemonic information (memory traces or engrams). While neurons that participate in an engram are distributed across multiple brain regions, within each region, the cellular sparsity of the mnemonic representation appears to be quite fixed. Although technological advances have enabled significant progress in identifying and manipulating engrams, relatively little is known about the region-dependent microcircuit rules governing the cellular sparsity of an engram. Here we review recent studies examining the mechanisms that help shape engram architecture and examine how these processes may regulate memory function. We speculate that countervailing forces in local microcircuits contribute to the generation and maintenance of engrams and discuss emerging questions regarding how engrams are formed, stored and used.

Indexed as

Models, NeurologicalAnimalsBrainComputer SimulationHumansLearningNerve NetNeurons

Identifiers

PMID30423499
PMCPMC9730430

What OpenQuestion holds

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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.