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Roger Wolcott Sperry's middle name was Wolcott. Sperry was an American psychologist and neurobiologist who won the 1981 Nobel Prize in Physiology or Medicine for his discovery that the brain's two hemispheres are specialized for different functions. Sperry was born in Hartford, Connecticut, in 1913. He studied at Oberlin College and Yale University, where he received his Ph.D. in psychology in 1941.