TED-Ed: What happens when you remove the hippocampus? - Sam Kean

In 1953, Dr. William Scoville performed a lobotomy on Henry Molaison (H.M.) to treat his seizures, removing his hippocampus. While the surgery reduced seizures, it severely impaired H.M.'s memory, preventing him from forming new long-term memories. Brenda Milner's research on H.M. revealed distinctions between short-term and long-term memory, and between declarative and procedural memory. These findings revolutionized our understanding of memory processes. H.M.'s case became a cornerstone in neuroscience, with his brain extensively studied after his death, contributing significantly to memory research.

What distinction did Milner's findings make regarding types of memory?

What was the significance of H.M.'s case in the field of neuroscience?

How was H.M.'s brain treated after his death?