White matter integrity in veterans with mild traumatic brain injury: associations with executive function and loss of consciousness.

Objective: We investigated using diffusion tensor imaging (DTI) and the association between white matter integrity and executive function (EF) performance in postacute mild traumatic brain injury (mTBI). In addition, we examined whether injury severity, as measured by loss of consciousness (LOC) versus alterations in consciousness (AOC), is related to white matter microstructural alterations and neuropsychological outcome.

Participants: Thirty Iraq and Afghanistan War era veterans with a history of mTBI and 15 healthy veteran control participants.