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Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual remembers mundane...

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Related Experiment Video

Updated: May 15, 2026

Stress-Enhanced Fear Learning, a Robust Rodent Model of Post-Traumatic Stress Disorder

Stress-Enhanced Fear Learning, a Robust Rodent Model of Post-Traumatic Stress Disorder

Published on: October 13, 2018

Individual differences in recovery from traumatic fear.

Andrew Holmes¹, Nicolas Singewald

¹Laboratory of Behavioral and Genomic Neuroscience, National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institute of Health, Bethesda, MD, USA. Andrew.Holmes@nih.gov

Trends in Neurosciences

|December 25, 2012

Summary

Individual differences in recovery from trauma, like post-traumatic stress disorder (PTSD), are linked to fear extinction. Research into neural circuits and genetics offers insights into anxiety disorder risk and potential treatments.

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Stress-Enhanced Fear Learning, a Robust Rodent Model of Post-Traumatic Stress Disorder

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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

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Area of Science:

Neuroscience
Psychiatry
Genetics

Background:

Major psychological trauma is common, but risk for conditions like PTSD varies.
Fear extinction is a key behavioral indicator of learned recovery from trauma.
Understanding individual differences in trauma recovery is crucial for mental health.

Purpose of the Study:

To explore the role of fear extinction in individual differences in trauma recovery.
To discuss how research on neural systems, molecular circuits, and genetics informs our understanding of PTSD risk.
To highlight the potential for identifying new biomarkers and treatments for trauma-related anxiety disorders.

Main Methods:

Studies in rodent models to investigate neural system dysfunctions.
Analysis of molecular circuits and epigenetic mechanisms.
Examination of gene variants associated with fear extinction differences.

Main Results:

Research reveals insights into neural system dysfunctions linked to impaired fear extinction.
Key molecular circuits, epigenetic mechanisms, and gene variants influencing fear extinction are being identified.
These findings contribute to understanding the basis of individual differences in trauma response.

Conclusions:

Fear extinction research is vital for understanding the etiology and pathophysiology of PTSD risk.
Future work can leverage these findings to develop novel diagnostic biomarkers.
This research paves the way for identifying new pharmacotherapeutics for trauma-related anxiety disorders.