Human Brain (image) Medical University of South Carolina Share Print E-Mail Caption A real human brain, photographically enhanced to illustrate the relationship between alcohol exposure and PTSD. Psychologist Justin Gass believes repeated alcohol exposure stregthens the connections between neurons responsible for storing traumatic memories. Credit Justin Gass Usage Restrictions Credit must be given to MUSC and Justin Gass Share Print E-Mail 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.