Doctor of Medicine, Tokyo Medical and Dental University, 1980. Doctor of Philosophy, Tsukuba University, Japan, 1983.
Intern University California, Sacramento, 1983-1984, resident in neurology, 1984-1987. Assistant professor Tsukuba University, 1987-1992. Chief neurology service Hitachi (Japan) General Hospital, 1992-1994.
Chief. department neurology Nippon Telegraph and Telephone East Kanto Medical Center, Japan, 1994—2006. Director Aikawa Hospital, Ibaraki, Japan, since 2006.
Member American Academy Neurology, American Association Electrodiagnostic Medicine, Japanese Society Neurology, Japanese Society Clinical Neurophysiology, National Geography Society.
Married Aikawa Chimaki, January 20, 1989.