1. Executive Committee of the International Neuropsychiatric Association (INA) 2. Executive Committee of the Asian Society Against Dementia (ASAD) 3. Councilor of the Japanese Society of Cognitive Neuroscience 4. Councilor of the Japan Society for Higher Brain Dysfunction 5. Councilor of the Neuropsychology Association of Japan 6. Councilor of the Japan Psychogeriatric Association 7. Councilor of the Japan Society for Dementia Research

Board of Internal Medicine, Clinical Neurology, Stroke Medicine, Geriatric Psychiatry, and Dementia Medicine certified by the Japanese Societies of Internal Medicine, Neurology, Stroke, Psychogeriatric, and Dementia Association