Evidence map›Paper›PMID 31351844›Full record

ArticleBehavioural brain research2019

Nucleus reuniens mediates the extinction of contextual fear conditioning.

Karthik R Ramanathan, Stephen Maren

Abstract read
In one paragraph

Article in Behavioural brain research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
–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

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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

39 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  16. The Emerging Role of Brain Mitochondria in Fear and Anxiety.Current topics in behavioral neurosciences · 2025
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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.

Karthik R RamanathanInstitute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA; Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, 77843, USA.
Stephen MarenInstitute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA; Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, 77843, USA. Electronic address: maren@tamu.edu.

Funding

Neural Substrates of Contextual Memory in Fear ExtinctionR01MH065961 · NIMH · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MAREN, STEPHEN · 2003 to 2025
$7.9M
Neural Circuits for Stress-Impaired Extinction LearningR01MH117852 · NIMH · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI Stephen Maren · 2018 to 2026
$4.6M
NIMH NIH HHS R01 MH065961NIMH NIH HHS R01 MH117852
6 · The paper itself

Abstract

Learning and remembering the context in which events occur requires interactions between the hippocampus (HPC) and medial prefrontal cortex (mPFC). The nucleus reuniens (RE) is a ventral midline thalamic nucleus that coordinates activity in the mPFC and HPC and is involved in spatial and contextual memory. We recently found that the RE is critical for contextual fear conditioning in rats, a form of learning that involves interactions between the HPC and mPFC. Here we examined whether the RE mediates the extinction of contextual fear. After contextual fear conditioning, rats underwent an extinction procedure in which they were merely exposed to the conditioning context; freezing behavior during the extinction procedure and during a retrieval test 24 h later served as an index of conditioned fear. Muscimol inactivation of the RE prior to extinction impaired the acquisition of both short- and long-term extinction memories. Similarly, inactivation of the RE prior to the extinction retrieval test also impaired the expression of extinction; this effect was not state-dependent. Taken together, these results reveal that the extinction of contextual fear memories requires the RE, which is consistent with a broader role for the RE in forms of learning that require HPC-mPFC interactions.

Indexed as

AnimalsBrainConditioning, ClassicalExtinction, PsychologicalFearHippocampusLearningMaleMemoryMemory, Long-TermMental RecallMidline Thalamic NucleiMuscimolNeural PathwaysPrefrontal CortexRatsMuscimolFear extinctionHippocampusMedial prefrontal cortexNucleus reuniensRetrievalThalamus

Identifiers

PMID31351844
PMCPMC6833945

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.