K.S. Lashley was a psychologist famous for running a slightly inhumane experiment. He taught a bunch of rats how to visually navigate a maze. This learned habit involved a small area in the very back of the brain called the occipital lobe. Lashley then surgically removed this part of the brain and attempted to reteach the rats how to navigate the same maze. To his astonishment, the rats learned how to navigate the maze in the same number of minutes by using other parts of the brain. This led Lashley to believe that memories aren't strictly stored in a single part of the brain but rather across the brain. Fascinating.