1 From the Institute for Neuroscience and Medicine, Research Center Jülich, Jülich, Germany; the Institute for Clinical Neuroscience and Medical Psychology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany; the Department of Psychiatry and Behavioral Sciences, and the Stanford Neurosciences Institute, Stanford University, Stanford, Calif.; the Veterans Affairs Palo Alto Health Care System, and the Sierra Pacific Mental Illness Research, Education and Clinical Center, Palo Alto, Calif.