Dr. Meyerhoff’s research goal is to better understand the neural and cognitive processes associated with specific insults to the human brain and their changes after removal of these insults. At the VA, Dr. Meyerhoff studies insults exceedingly common in the brain of veterans with substance dependence (alcohol, cocaine, and nicotine), post-traumatic stress disorder (PTSD), Gulf War Syndrome, and HIV infection. He uses primarily 1H MR to study mechanisms of neurodegenerative insults and recovery from them under special consideration of behavioral and cognitive correlations as well as genetic determinants.