Evidence map›Paper›PMID 29269319›Full record

ReviewBrain research bulletin2018

The dynamic nature of fear engrams in the basolateral amygdala.

Patrick Davis, Leon G Reijmers

Abstract readReview
In one paragraph

Review in Brain research bulletin, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Chronic stress enhances threat responding and impacts fear extinction.Learning & memory (Cold Spring Harbor, N.Y.) · 2026
    Article
  2. Article
  3. Article
  4. Sex Differences in Neural Circuits Underlying Fear Processing.Current topics in behavioral neurosciences · 2025
    Review
  5. Article
  6. Reactivation of Early-Life Stress-Sensitive Neuronal Ensembles Contributes to Lifelong Stress Hypersensitivity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  7. Review
  8. Social reactivation of fear engrams enhances memory recall.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

2 authors.

Patrick DavisDepartment of Neuroscience, Tufts University School of Medicine, Boston, MA, United States; Medical Scientist Training Program and Graduate Program in Neuroscience, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, United States.
Leon G ReijmersDepartment of Neuroscience, Tufts University School of Medicine, Boston, MA, United States. Electronic address: leon.reijmers@tufts.edu.

Funding

MEDICAL SCIENTIST TRAINING PROGRAM AT TUFTS UNIVERSITYT32GM008448 · NIGMS · TUFTS UNIVERSITY BOSTON · PI CHIN, MICHAEL T · 1994 to 2022
$9.1M
Synaptic and circuit mechanisms of fear suppressionR01MH104589 · NIMH · TUFTS UNIVERSITY BOSTON · PI REIJMERS, LEON · 2017 to 2021
$2.1M
Synapse Neurobiology Training ProgramT32NS061764 · NINDS · TUFTS UNIVERSITY BOSTON · PI BIEDERER, THOMAS · 2009 to 2019
$1.7M
Synaptic and circuit mechanisms of fear suppressionR56MH104589 · NIMH · TUFTS UNIVERSITY BOSTON · PI REIJMERS, LEON · 2022 to 2022
$562k
NIGMS NIH HHS T32 GM008448NIMH NIH HHS R01 MH104589NIMH NIH HHS R56 MH104589NINDS NIH HHS T32 NS061764
6 · The paper itself

Abstract

Great progress has been made in our understanding of how so-called memory engrams in the brain enable the storage and retrieval of memories. This has led to the realization that across the lifetime of an animal, the spatial and temporal properties of a memory engram are not fixed, but instead are subjected to dynamic modifications that can be both dependent and independent on additional experiences. The dynamic nature of engrams is especially relevant in the case of fear memories, whose contributions to an animal's evolutionary fitness depend on a delicate balance of stability and flexibility. Though fear memories have the potential to last a lifetime, their expression also needs to be properly tuned to prevent maladaptive behavior, such as seen in patients with post-traumatic stress disorder. To achieve this balance, fear engrams are subjected to complex spatiotemporal dynamics, making them informative examples of the "dynamic engram". In this review, we discuss the current understanding of the dynamic nature of fear engrams in the basolateral amygdala, a brain region that plays a central role in fear memory encoding and expression. We propose that this understanding can be further advanced by studying how fast dynamics, such as oscillatory circuit activity, support the storage and retrieval of fear engrams that can be stable over long time intervals.

Indexed as

AnimalsBasolateral Nuclear ComplexFearHumansMemoryModels, NeurologicalModels, Psychological

Identifiers

PMID29269319
PMCPMC6005719

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.