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Post-traumatic Stress Disorder

Post-traumatic Stress Disorder

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: Nov 18, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity

Published on: July 1, 2014

Resting-state functional network models for posttraumatic stress disorder.

¹Psychology Department, Eastern Michigan University, Michigan.

Journal of Neurophysiology

|February 10, 2021

Summary

This summary is machine-generated.

Resting-state fMRI studies show altered brain network activity in individuals with posttraumatic symptoms. Specifically, the default mode network exhibits reduced centrality and increased efficiency, correlating with posttraumatic stress disorder (PTSD) presentations.

Keywords:

PTSD fMRI functional connectivity network models resting-state

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Last Updated: Nov 18, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity

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Published on: July 1, 2014

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Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy

Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy

Published on: August 5, 2014

Area of Science:

Neuroscience
Psychiatry
Medical Imaging

Background:

Posttraumatic symptoms can significantly impact an individual's mental health and well-being.
Understanding the neural underpinnings of these symptoms is crucial for developing effective interventions.

Purpose of the Study:

To review and synthesize findings from recent studies using resting-state functional magnetic resonance imaging (fMRI) in individuals with posttraumatic symptoms.
To explore the utility of network metrics in characterizing brain function alterations associated with these conditions.

Main Methods:

Analysis of four recent articles employing resting-state fMRI.
Application of theory-driven computations and novel network metrics.
Inclusion of data-driven methods from other relevant studies.

Main Results:

Reduced global centrality within the default mode network was observed in participants with posttraumatic symptoms.
Increased efficiency within the default mode network was also noted.
Associations between functional brain networks and posttraumatic stress disorder (PTSD) symptoms were identified, alongside distinct patterns of functional activation corresponding to different PTSD presentations.

Conclusions:

Resting-state fMRI, particularly with network metrics, offers valuable insights into the neural correlates of posttraumatic symptoms.
Altered default mode network dynamics appear central to the neurobiology of posttraumatic conditions.
Further research can leverage these findings for improved diagnosis and treatment of PTSD.