Neural circuitry changes associated with increasing self-efficacy in Posttraumatic Stress Disorder

Area of Science:

• Neuroscience
• Psychology
• Clinical Research

Background:

• Cognitive models link posttraumatic stress disorder (PTSD) to maladaptive beliefs about coping abilities.
• Low self-efficacy is consistently associated with PTSD.
• Self-efficacy can be experimentally enhanced, improving task performance in various populations.

Purpose of the Study:

• To investigate if increasing self-efficacy in combat veterans with PTSD affects neural processing.
• To explore the neural correlates of enhanced self-efficacy in a PTSD population.

Main Methods:

• Thirty-four combat veterans with PTSD were randomized into a high self-efficacy (HSE) induction group or a control group.
• The HSE group recalled memories of successful coping.
• Resting-state functional magnetic resonance imaging (fMRI) was used to examine neural processing, focusing on global network measures in four neural circuits.

Main Results:

• Participants in the HSE condition exhibited increased right-lateralized path length and decreased right-lateralized connectivity within emotional regulation and executive function circuits.
• Area under the receiver operating characteristic curve (AUC) analyses indicated that average connectivity and path length moderately predicted HSE group membership.

Conclusions:

• Findings support the role of perceived control enhancement in managing PTSD.
• Modulating self-efficacy may engage specific neural targets, offering a basis for developing novel PTSD interventions.