Dr. Suhara received the Ph.D. from Jikei University School of Medicine in 1991 for his study of dopamine receptor binding in vivo. He joined NIRS in 1989. In 1992-1993, he studied in the PET group of Department of Clinical Neuroscience, Karolinska Hospital, Sweden. He has done research on brain functional imaging for many years. He has served as a visiting professor in the Department of Neuropsychiatry, Nippon Medical School since 2004, and in the Graduate school of Medicine, Yokohama City University since 2006.