Dr. Peter Kalivas and Dr. Sudie Back (IMAGE) Medical University of South Carolina Caption Dr. Peter Kalivas (left), professor and chair of the Department of Neuroscience at the Medical University of South Carolina (MUSC), and lead author Dr. Sudie Back (right), professor in the Department of Psychiatry and Behavioral Sciences at MUSC and a staff psychologist at the Ralph H. Johnson VA Medical Center. Credit Medical University of South Carolina Usage Restrictions Free to use if proper credit and caption is provided License Licensed 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.