Sperry, Roger Wolcott, 1913–94, American biologist, b. Hartford, Conn., Ph.D. Univ. of Chicago, 1941. He studied zoology before teaching biology at the Univ. of Chicago (1946–52) and the California Institute of Technology (1954–84). In the 1950s and 60s, he was a pioneer in conducting behavioral investigations of the brain's hemispheres. In 1981 he shared the Nobel Prize in Physiology or Medicine with David H. Hubel and Torsten N. Wiesel.
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