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This research investigates processes involved with one being able to focus on relevant information and ignore non-relevant information in veterans with PTSD and those with a history of traumatic brain injury. In addition, this studies evaluates whether there is an additive effect of having both PTSD and history of TBI on ability to focus attention and inhibit distracting information.
Traumatic brain injury (TBI) and PTSD both are characterized by deficits in attention, yet it is unclear as to whether this is related to an inability to focus on relevant information or ignore non-relevant information. History of TBI and PTSD are common to returning soldiers from OEF/OIF and thus is highly relevant to veteran health care. It is unclear how TBI and PTSD separately, and together, affect one's ability to focus attention versus inhibit distracting stimuli. This research investigates this issue by use of a working memory paradigm with functional magnetic resonance imaging (fMRI) that entails the subject being instructed to ignore some stimuli and remember other stimuli resulting in discrete biomarkers of (1) task-related enhancement of neural processes as well as (2) suppression of task-irrelevant neural processes. In this way, the specific aspect of attention in TBI and PTSD will be elucidated in addition to exploring whether PTSD and TBI have an additive, or even synergist, effect when combined.
Observational Model: Case Control, Time Perspective: Prospective
VA Northern California HCS
Not yet recruiting
Department of Veterans Affairs
Published on BioPortfolio: 2014-08-27T03:15:48-0400
Compare PTSD and non-PTSD subjects on several demographic, cognitive and military variables
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