Catecholamine-producing Neurons (IMAGE) NIH/National Institute of Mental Health Caption Representative iPSC-derived neurons from Timothy syndrome patient (bottom) shows increased numbers of neurons that produce the chemical messengers norepinephrine and dopamine, compared to those from a control subject (top). Credit Ricardo Dolmetsch, Ph.D., Stanford 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.