He was a descendant of Chinzan Narabayashi who had studied Western medicine with Dutch physicians at Dejima in the 17th century.
In the same year, he was appointed Associate Professor, Department of Neuropsychiatry, at the Juntendo University School of Medicine in Tokyo.
Although trained originally as a neuropsychiatrist, he is best known for his pioneering work in stereotactic surgery, especially the surgical treatment of Parkinson's disease.
[1] In 1957 he established a private clinic specializing in stereotaxic neurosurgery which became a leading center for both research and treatment.
Dr. Narabayashi lectured all over the world, but perhaps his most memorable trip was to Cuba in 1974 at the invitation of the Cuban Institute of Neuroscience.