Ichiji Tasaki (田崎 一二, Tasaki Ichiji, October 10, 1910 – January 4, 2009) was a Japanese-born American biophysicist and physician involved in research relating to the electrical impulses in the nervous system.
Tasaki is credited with discovering the insulating function of the myelin sheath.[1][2] His discoveries provided the foundation for a better understanding of diseases such as multiple sclerosis, in which myelin is lost or damaged.