Evidence map›Paper›PMID 24321650›Full record

ReviewNeurobiology of learning and memory2014

From Pavlov to PTSD: the extinction of conditioned fear in rodents, humans, and anxiety disorders.

Michael B VanElzakker, M Kathryn Dahlgren, F Caroline Davis, Stacey Dubois, Lisa M Shin

Open access · greenAbstract readReview
In one paragraph

Review in Neurobiology of learning and memory, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 240 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
240citing papers in PubMed, 5 pooled it
14.1field-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

240 citing papers in PubMed, 5 syntheses or guidelines pooled it, 475 citations in OpenAlex.

  1. Pooled it
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  10. Effects of intranasal oxytocin on fear extinction learning.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
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180 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

5 authors at 2 institutions in 1 country.

Michael B VanElzakkerTufts University Psychology, 490 Boston Avenue, Medford, MA 02155, USA; Massachusetts General Hospital Psychiatry, 149 Thirteenth Street, Charlestown, MA 02129, USA. Electronic address: michael.vanelzakker@gmail.com.
M Kathryn DahlgrenTufts University Psychology, 490 Boston Avenue, Medford, MA 02155, USA; Massachusetts General Hospital Psychiatry, 149 Thirteenth Street, Charlestown, MA 02129, USA.
F Caroline DavisMassachusetts General Hospital Psychiatry, 149 Thirteenth Street, Charlestown, MA 02129, USA.
Stacey DuboisTufts University Psychology, 490 Boston Avenue, Medford, MA 02155, USA.
Lisa M ShinTufts University Psychology, 490 Boston Avenue, Medford, MA 02155, USA; Massachusetts General Hospital Psychiatry, 149 Thirteenth Street, Charlestown, MA 02129, USA.
Tufts University · USMassachusetts General Hospital · US

Funding

TWIN STUDY OF BIOLOGIC MARKERS FOR PTSDR01MH054636 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI SHIN, LISA M · 1995 to 2012
$7.6M
NIMH NIH HHS 5R01MH054636NIMH NIH HHS R01 MH054636
6 · The paper itself

Abstract

Nearly 100 years ago, Ivan Pavlov demonstrated that dogs could learn to use a neutral cue to predict a biologically relevant event: after repeated predictive pairings, Pavlov's dogs were conditioned to anticipate food at the sound of a bell, which caused them to salivate. Like sustenance, danger is biologically relevant, and neutral cues can take on great salience when they predict a threat to survival. In anxiety disorders such as posttraumatic stress disorder (PTSD), this type of conditioned fear fails to extinguish, and reminders of traumatic events can cause pathological conditioned fear responses for decades after danger has passed. In this review, we use fear conditioning and extinction studies to draw a direct line from Pavlov to PTSD and other anxiety disorders. We explain how rodent studies have informed neuroimaging studies of healthy humans and humans with PTSD. We describe several genes that have been linked to both PTSD and fear conditioning and extinction and explain how abnormalities in fear conditioning or extinction may reflect a general biomarker of anxiety disorders. Finally, we explore drug and neuromodulation treatments that may enhance therapeutic extinction in anxiety disorders.

Indexed as

Anxiety DisordersStress Disorders, Post-TraumaticAnimalsConditioning, ClassicalExtinction, PsychologicalFearHumansAmygdalaAnxietyFear conditioningFear extinctionPosttraumatic stress disorderPrefrontal cortexTreatment

Identifiers

PMID24321650
PMCPMC4156287
OpenAlexW2019438546

What OpenQuestion holds

Textmetadata
LicenceTDM
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.