Objective: To determine the impact of traumatic brain injury (TBI) and heavy weapons (HW) blast exposure on neuropsychological functioning in a military cohort. Method: Our cross-sectional study consisted of 52 active duty service members with a history of HW use. Participants were male ranging in age from 22-37 years. Twenty reported prior combat deployment, 21 met criteria for Post-Concussive Disorder, and 3 met criteria for Post-Traumatic Stress Disorder. All participants completed structured interviews assessing self-report TBI and blast exposure history, as well as a battery of neuropsychological tests: Hopkins Verbal Learning Test-Revised (HVLT-R), Trail Making Tests (TMT), Go-no-go (GNG), Procedural Reaction Time (PRT), and simple Reaction Time (RT). Results: There was a significant correlation between HW blast exposure and GNG accuracy, r(52) = -.30, p = .016, and a significant correlation with median...

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