Evidence map›Paper›PMID 26068726›Full record

ReviewNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2016

Adult Hippocampal Neurogenesis, Fear Generalization, and Stress.

Antoine Besnard, Amar Sahay

Open access · bronzeAbstract readReview
In one paragraph

Review in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 2 pooled it
11.2field-weighted citation impact, top 1% 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

110 citing papers in PubMed, 2 syntheses or guidelines pooled it, 223 citations in OpenAlex.

  1. A meta-analysis of conditioned fear generalization in anxiety-related disorders.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
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  14. Inhibitory Neurons Marked by the Connectivity Molecule Kirrel3 Regulate Memory Precision.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  20. Distortion of overlapping memories relates to arousal and anxiety.Cognitive, affective & behavioral neuroscience · 2025
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50 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 1 country.

Antoine BesnardCenter for Regenerative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Amar SahayCenter for Regenerative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Harvard Stem Cell Institute · USMassachusetts General Hospital · US

Funding

Molecular control of excitation-inhibition balance to encode ambiguous threatsR01MH104175 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI SAHAY, AMAR · 2014 to 2018
$2.7M
NIMH NIH HHS 1-R01MH104175NIMH NIH HHS R01 MH104175
6 · The paper itself

Abstract

The generalization of fear is an adaptive, behavioral, and physiological response to the likelihood of threat in the environment. In contrast, the overgeneralization of fear, a cardinal feature of posttraumatic stress disorder (PTSD), manifests as inappropriate, uncontrollable expression of fear in neutral and safe environments. Overgeneralization of fear stems from impaired discrimination of safe from aversive environments or discernment of unlikely threats from those that are highly probable. In addition, the time-dependent erosion of episodic details of traumatic memories might contribute to their generalization. Understanding the neural mechanisms underlying the overgeneralization of fear will guide development of novel therapeutic strategies to combat PTSD. Here, we conceptualize generalization of fear in terms of resolution of interference between similar memories. We propose a role for a fundamental encoding mechanism, pattern separation, in the dentate gyrus (DG)-CA3 circuit in resolving interference between ambiguous or uncertain threats and in preserving episodic content of remote aversive memories in hippocampal-cortical networks. We invoke cellular-, circuit-, and systems-based mechanisms by which adult-born dentate granule cells (DGCs) modulate pattern separation to influence resolution of interference and maintain precision of remote aversive memories. We discuss evidence for how these mechanisms are affected by stress, a risk factor for PTSD, to increase memory interference and decrease precision. Using this scaffold we ideate strategies to curb overgeneralization of fear in PTSD.

Indexed as

AdultAnimalsFearHippocampusHumansNerve NetNeurogenesisStress Disorders, Post-TraumaticStress, Psychological

Identifiers

PMID26068726
PMCPMC4677119
OpenAlexW1553183704

What OpenQuestion holds

Textmetadata
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.