1. Center for Neural Science, New York University, New York, NY 10003, USA.
2. Department of Psychology, University of Texas, Austin, TX 78712, USA.
3. Department of Psychology, New York University, New York, NY 10003, USA.
4. Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA.
5. Emotional Brain Institute, New York University, New York, NY 10003, USA.