Answer
In 1981, Roger Wolcott Sperry, David Hunter Hubel and Torsten Nils Wiesel won the Nobel Prize in Physiology & Medicine. Sperry's work focused on the split brain, and his discovery that the left and right hemispheres of the brain have different functions. Hubel and Wiesel's work focused on the visual cortex, and their discovery of the way that the brain processes visual information.