Brain Stimulation (IMAGE) Drexel University Caption John Medaglia, PhD, a psychology professor at Drexel's College of Arts and Sciences, performs transcranial magnetic stimulation (TMS), a noninvasive brain stimulation technique, on an individual in his lab. Credit John Medaglia / Drexel University 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.