Nagele (IMAGE) Washington University School of Medicine Caption Peter Nagele, M.D., professor and chair of the Department of Anesthesia & Critical Care at the University of Chicago, hasbeen studying the potential of nitrous oxide as an antidepressant for the past decade. Credit University of Chicago Usage Restrictions None 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.