Post-traumatic Stress Disorder (PTSD) Clinical Trial
Official title:
Transcranial Infrared Laser Stimulation (TILS) of Prefrontal Metabolism and Function in Post-traumatic Stress Disorder (PTSD)
This study evaluates the effects of transcranial infrared laser stimulation (TILS) on prefrontal metabolism and hemodynamics in veterans with post-traumatic stress disorder (PTSD). The subjects will receive six TILS interventions and one sham intervention in a course of seven weeks.
Post-traumatic stress disorder (PTSD) is often associated with cognitive impairments. It has been indicated that hypoactivity of the prefrontal cortex plays a major role in the disrupted neural circuitry of mood and cognition. Transcranial infrared laser stimulation (TILS) is a neural type of photobiomodulation that can elevate neuronal metabolism by exciting cytochrome c oxidase (CCO). Veterans with PTSD will receive prefrontal TILS interventions once-per-week for six weeks. They will also receive an additional sham intervention (laser power = 0) that will be randomly assigned into the first two sessions. Broadband near-infrared spectroscopy (bbNIRS) will be used to directly assess the CCO changes during every TILS/sham session. Veterans' prefrontal functions will be evaluated with short-term memory tasks before and after each intervention. The prefrontal activities will also be imaged by functional near-infrared spectroscopy (fNIRS) to objectively assess the functional changes due to TILS/sham interventions. ;
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