1. Laboratory impulsivity and depression in blast-exposed military personnel with post-concussion syndrome
- Author
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F. Gerard Moeller, Thomas K. Burroughs, Sade E. Johns, William C. Walker, James M. Bjork, Laura Manning Franke, and Treven C. Pickett
- Subjects
Adult ,Male ,medicine.medical_specialty ,Poison control ,Impulsivity ,Blast injury ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Blast Injuries ,Concussion ,medicine ,Humans ,Psychiatry ,Biological Psychiatry ,Depression (differential diagnoses) ,Post-concussion syndrome ,Depression ,Post-Concussion Syndrome ,Rivermead post-concussion symptoms questionnaire ,Middle Aged ,medicine.disease ,030227 psychiatry ,Psychiatry and Mental health ,Mood ,Military Personnel ,Impulsive Behavior ,Female ,medicine.symptom ,Psychology ,030217 neurology & neurosurgery ,Clinical psychology - Abstract
In military populations, traumatic brain injury (TBI) also holds potential to increase impulsivity and impair mood regulation due to blast injury effects on ventral frontal cortex - to put military personnel at risk for suicide or substance abuse. We assessed a linkage between depression and impaired behavioral inhibition in 117 blast-exposed service members (SM) and veterans with post-concussion syndrome (PCS), where PCS was defined using a Rivermead Postconcussive Symptom Questionnaire (RPQ) modified to clarify whether each symptom worsened compared to pre-blast. Center for Epidemiological Studies-Depression Scale (CES-D) scores, PTSD Checklist 5 (PCL-5) scores, and RPQ raw subscale scores correlated positively with commission and perseverative errors on the continuous performance test II (CPT-II). In contrast, the number of RPQ symptoms ostensibly worsened post-blast did not correlate with impulsive errors on the CPT-II. These data replicate earlier findings that link increased affective symptomatology to impaired behavior inhibition in military TBI populations, but where additional effects on impulsivity from the blast itself remain equivocal.
- Published
- 2016