The ability to conjure up possible futures or alternative realities is
the flip side of memory. Both faculties cohabit in the brain region
called the hippocampus
June 8, 2023
Henry Molaison, known for
years as “H.M.,” was famously unable to form new memories. If someone he had
met left the room only to return several minutes later, he would greet that
person again as if for the first time. Because of surgery to treat intractable
epilepsy, H M. lacked a sea-horse-shaped brain structure called the hippocampus
and had amnesia. His case helped establish the hippocampus as an engine of
memory.
