Nitrous Oxide Research Team (IMAGE) WashU Medicine Caption Psychiatrists Charles R. Conway, M.D., (from left) and Charles F. Zorumski, M.D., worked with anesthesiologist Peter Nagele, M.D., on a small, pilot study in which nitrous oxide was given to patients with treatment-resistant depression. The team plans further research based on results suggesting that the gas may be a possible treatment for depression. Credit Robert Boston 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.