Henry Molaison

Henry Molaison, often referred to as H.M., was an American man who, after surgery in 1953 to treat severe epilepsy, lost the ability to form new memories. The surgery removed parts of his brain, crucial for memory processing. H.M.'s case provided significant insights into how memory works, leading neuroscientists to understand the distinction between different types of memory. Despite his condition, H.M. demonstrated preserved short-term memory and skilled learning, which highlighted the complexity of human memory. His legacy continues to influence research in neuroscience and psychology.