[1] Univ Calif Los Angeles, Ahmanson Lovelace Brain Mapping Ctr, Neurosci Interdept Program, 660 Charles E Young Dr South, Los Angeles, CA 90095 USA
[2] Univ N Carolina, Dept Psychol & Neurosci, Chapel Hill, NC USA
[3] Univ Calif Los Angeles, Dept Psychiat & Biobehav Sci, Los Angeles, CA USA
[4] Univ Calif Los Angeles, Jane & Terry Semel Inst Neurosci & Human Behav, Los Angeles, CA USA