fMRI images of brain of veteran with PTSD (IMAGE) University of California - Berkeley Caption An fMRI scan of the brain of a military veteran with PTSD, showing gray matter regions with increased myelin. Credit UCSF image by Linda Chao Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.