Homonym: H.M. (Memory)
H.M. refers to Henry Molaison, a man who became famous in the field of neuroscience after undergoing surgery in 1953 to treat his severe epilepsy. The procedure involved removing parts of his brain, including the hippocampus, which resulted in profound memory loss. H.M. could no longer form new long-term memories, although his short-term memory remained intact.
His case provided valuable insights into how memory works, leading researchers to understand the role of the hippocampus in forming and retrieving memories. H.M.'s condition has been extensively studied, making him a key figure in the study of amnesia and memory disorders.