[1] Univ Toyama, Dept Neuropsychiat, Grad Sch Med & Pharmaceut Sci, Toyama, Japan
[2] Univ Toyama, Res Ctr Idling Brain Sci, Toyama, Japan
[3] Univ Tokyo, Inst Divers & Adaptat Human Mind, Tokyo, Japan
[4] Univ Tokyo, Ctr Evolutionary Cognit Sci, Grad Sch Art & Sci, Tokyo, Japan
[5] Keio Univ, Dept Neuropsychiat, Sch Med, Tokyo, Japan
[6] Ctr Addict & Mental Hlth, Brain Hlth Imaging Ctr, Toronto, ON, Canada
[7] Kyushu Univ, Dept Neuropsychiat, Fukuoka, Japan
[8] Harvard Med Sch, VA Boston Healthcare Syst, Dept Psychiat, Neural Dynam Lab,Res Serv, Boston, MA 02115 USA