Inside The Mind Of The Amnesiac Who Revolutionized Neuroscience

Henry Gustav Molaison (1926-2008), previously known as H.M., was an American memory disorder patient whose hippocampi, parahippocampal gyrus, and amygdalae were surgically removed in an attempt to cure his epilepsy. The lobotomy was botched and left him unable to form new memories. He was widely studied from late 1957 until his death in 2008.

His case played a very important role in the development of theories that explain the link between brain function and memory, and in the development of cognitive neuropsychology.