Dr. Michael D. Gershon is the author of The Second Brain and the chairman of the department of anatomy and cell biology at Columbia University. See also Ulcerative colitis Enteric nervous system Auerbach's plexus External links Research summary page of Columbia University The Other Brain Also Deals With Many Woes, New York Times, 23 August 2005 Living people 1938 births Place of birth missing (living people) Columbia University faculty