Roger Sperry was a neuroscientist who was born in the early 20th century. He is most well-known for his research on the split-brain, which showed that the two hemispheres of the brain have different functions. Sperry's work helped to change the way we think about the brain and its role in cognition.
Neuropsychology Extraordinaire: Unraveling the Genius of Roger Wolcott Sperry