HM Had Part of His Brain Removed in 1953 When

Essay

H.M. had part of his brain removed in 1953 when he was 27 years old. H.M.'s disorder had been life-threatening and so the surgery had been a medical necessity. But the surgery did have profound effects on H.M.'s memory. What brain structure was removed? Integrate information regarding the reconstruction of memory with information on the brain presented earlier in the text. Using the three-box model of memory, explain how the flow of information has been disrupted in H.M.