The effects of loss versus alteration of consciousness on inhibition-related brain activity among individuals with a history of blast-related concussion

In this investigation, 27 individuals who experienced blast-related concussion, i.e., brief loss (LOC) or alteration (AOC) of consciousness, performed a stop task during functional magnetic resonance imaging. LOC versus AOC subjects displayed altered ventromedial prefrontal cortex activity, which correlated with somatic symptom severity-findings which may suggest a neural correlate of impaired self awareness after LOC.