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Related Concept Videos

Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

947
Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
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Related Experiment Video

Updated: Apr 24, 2026

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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Brain structure in post-traumatic stress disorder: A voxel-based morphometry analysis.

Liwen Tan1, Li Zhang1, Rongfeng Qi2

  • 1Mental Health Institute of the Second Xiangya Hospital, Central South University, Key Laboratory of Psychiatry and Mental Health of Hunan Province, Hunan Province Technology Institute of Psychiatry, Changsha 410011, Hunan Province, China.

Neural Regeneration Research
|September 11, 2014
PubMed
Summary
This summary is machine-generated.

Chronic post-traumatic stress disorder (PTSD) is linked to gray matter damage in brain regions like the prefrontal and occipital lobes. While symptom improvement shows reduced damage, it doesn't fully recover to trauma-control levels.

Keywords:
MRIfollow-upsgrants-supported paperneural regenerationneuroimagingneuroregenerationoccipital lobeparietal lobepost-traumatic stress disorderpre-frontal lobevoxel-based morphometry

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Trauma Studies

Background:

  • Post-traumatic stress disorder (PTSD) is a debilitating condition following traumatic events.
  • Understanding the neurobiological underpinnings of PTSD is crucial for developing effective treatments.
  • Mine disasters represent a significant traumatic event with potential long-term psychological consequences.

Purpose of the Study:

  • To compare brain structure differences in individuals with chronic PTSD, those with improved PTSD symptoms, and trauma-exposed controls.
  • To investigate the correlation between brain structural changes and PTSD symptom severity.
  • To identify specific brain regions affected by chronic PTSD and symptom recovery.

Main Methods:

  • Voxel-based morphometry (VBM) was employed to analyze structural brain differences.
  • The study included three groups: chronic PTSD survivors (n=12), improved PTSD symptom cases (n=7), and trauma-exposed controls (n=14).
  • Statistical analyses were performed to identify significant differences in gray matter volume and correlations with anxiety scores.

Main Results:

  • Gray matter volume was significantly lower in chronic PTSD patients compared to both improved symptom and control groups.
  • Reduced gray matter volume was observed in the prefrontal, occipital, and parietal lobes of chronic PTSD patients.
  • The superior parietal lobule showed a positive correlation with anxiety scores in PTSD groups, suggesting its potential role in the disorder.

Conclusions:

  • Chronic PTSD is associated with gray matter structural damage in key brain regions.
  • Symptom improvement in PTSD leads to partial recovery of gray matter volume, but not to the level of unexposed controls.
  • The superior parietal lobule may be a critical region implicated in the pathophysiology of chronic PTSD.