Professor of Psychology, Department of Psychology, Capital University, Columbus, Ohio
Professor of Psychology and Brain Sciences, Department of Psychology and Brain Sciences, University of Indiana, Bloomington, IN
Associate Professor, Departments of Psychiatry and Neuroscience, Director of the Mood and Anxiety Disorders Program, Mount Sinai Hospital, New York, NY
Professor at the London Sleep Clinic and Honorary Fellow at the Institute of Neurology, University of London, London, England
Assistant Professor, Department of Psychiatry, University of Ryukyu, Okinawa. President, Arakaki Hospital, Okinawa
Professor and Chairman, Department of Psychiatry, Yokohama City University School of Medicine, Yokohama, Japan, and, as of April 1, 2010, also now President of Yokohama City University Hospital Medical Center, and Dean of the Graduate School of Medicine, Yokohama City University Graduate School of Medicine,Yokohama, Japan