順天堂大学
He was born in Kobe into a long line of physicians originally from Nagasaki. He was a descendant of Chinzan Narabayashi who had studied Western medicine with Dutch physicians at Dejima in the 17th century. He received his medical degree from the Tokyo University School of Medicine in 1946 and his Ph.D. from Tokyo University in 1955. In the same year, he was appointed Associate Professor, Department of Neuropsychiatry, at the Juntendo University School of Medicine in Tokyo. He was promoted to Full Professor in 1964. From 1968 to 1988, he was Professor and Chairman of the Department of Neurology at the Juntendo University School of Medicine.