Evidence map›Paper›PMID 30102149›Full record

ArticleeLife2018

Extinction recall of fear memories formed before stress is not affected despite higher theta activity in the amygdala.

Mohammed Mostafizur Rahman, Ashutosh Shukla, Sumantra Chattarji

Open access · goldAbstract read
In one paragraph

Article in eLife, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

7 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Article
  3. Stressed rats fail to exhibit avoidance reactions to innately aversive social calls.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Article
  4. Article
  5. Review
  6. Article
  7. 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

3 authors at 1 institution in 2 countries.

Mohammed Mostafizur RahmanNational Centre for Biological Sciences, Bangalore, India.ORCID https://orcid.org/0000-0002-9355-4867
Ashutosh ShuklaNational Centre for Biological Sciences, Bangalore, India.
Sumantra ChattarjiNational Centre for Biological Sciences, Bangalore, India.ORCID http://orcid.org/0000-0001-9962-3635
National Centre for Biological Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Stress is known to exert its detrimental effects not only by enhancing fear, but also by impairing its extinction. However, in earlier studies stress exposure preceded both processes. Thus, compared to unstressed animals, stressed animals had to extinguish fear memories that were strengthened by prior exposure to stress. Here, we dissociate the two processes to examine if stress specifically impairs the acquisition and recall of fear extinction. Strikingly, when fear memories were formed before stress exposure, thereby allowing animals to initiate extinction from comparable levels of fear, recall of fear extinction was unaffected. Despite this, we observed a persistent increase in theta activity in the BLA. Theta activity in the mPFC, by contrast, was normal. Stress also disrupted mPFC-BLA theta-frequency synchrony and directional coupling. Thus, in the absence of the fear-enhancing effects of stress, the expression of fear during and after extinction reflects normal regulation of theta activity in the mPFC, not theta hyperactivity in the amygdala.

Indexed as

FearMemoryStress, PhysiologicalTheta RhythmAmygdalaAnimalsExtinction, PsychologicalMaleMental RecallPrefrontal CortexRats, Sprague-Dawleybasolateral amygdalachronic immobilization stressfear conditioning and extinctionin vivo recordingsmedial prefrontal cortexneurosciencerattheta activity

Identifiers

PMID30102149
PMCPMC6125126
OpenAlexW2887145095

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.