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Neural activity and emotional processing following military deployment: Effects of mild traumatic brain injury and posttraumatic stress disorder

Zuj, DV ORCID: 0000-0002-6376-8354, Felmingham, KL, Palmer, MA ORCID: 0000-0002-3467-3364, Lawrence-Wood, E, Van Hooff, M, Lawrence, AJ, Bryant, RA and McFarlane, AC 2017 , 'Neural activity and emotional processing following military deployment: Effects of mild traumatic brain injury and posttraumatic stress disorder' , Brain and Cognition, vol. 118 , pp. 19-26 , doi: 10.1016/j.bandc.2017.07.001.

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Abstract

Posttraumatic Stress Disorder (PTSD) and mild traumatic brain injury (mTBI) are common comorbidities duringmilitary deployment that affect emotional brain processing, yet few studies have examined the independenteffects of mTBI and PTSD. The purpose of this study was to examine distinct differences in neural responses toemotional faces in mTBI and PTSD. Twenty-one soldiers reporting high PTSD symptoms were compared to 21soldiers with low symptoms, and 16 soldiers who reported mTBI-consistent injury and symptoms were comparedwith 16 soldiers who did not sustain an mTBI. Participants viewed emotional face expressions while their neuralactivity was recorded (via event-related potentials) prior to and following deployment. The high-PTSD groupdisplayed increased P1 and P2 amplitudes to threatening faces at post-deployment compared to the low-PTSDgroup. In contrast, the mTBI group displayed reduced face-specific processing (N170 amplitude) to all facialexpressions compared to the no-mTBI group. Here, we identified distinctive neural patterns of emotional faceprocessing, with attentional biases towards threatening faces in PTSD, and reduced emotional face processing inmTBI.

Item Type: Article
Authors/Creators:Zuj, DV and Felmingham, KL and Palmer, MA and Lawrence-Wood, E and Van Hooff, M and Lawrence, AJ and Bryant, RA and McFarlane, AC
Keywords: Traumatic brain injury; PTSD; ERP; Attention bias; Emotion
Journal or Publication Title: Brain and Cognition
Publisher: Academic Press Inc Elsevier Science
ISSN: 0278-2626
DOI / ID Number: 10.1016/j.bandc.2017.07.001
Copyright Information:

© 2017 Elsevier Inc

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