1. The Cognitive Neurophysiology Laboratory, Cognitive Neuroscience and Schizophrenia Program, and
2. Department of Neuroscience and
3. Department of Psychiatry and Behavioral Science, Albert Einstein College of Medicine, Bronx 10461;
4. Department of Psychiatry, New York University School of Medicine, New York City, New York 10016
5. Center for Advanced Brain Imaging, Nathan S. Kline Institute for Psychiatric Research, Orangeburg 10962;