Patient HM: real life “Memento”

“When twenty-seven year old Henry M. entered the hospital in 1953 for radical brain surgery that was supposed to cure his epilepsy, he was hopeful that the procedure would change his life for the better. Instead, it trapped him in a mental time warp where TV is always a new invention and Truman is forever president. The removal of large sections of his temporal lobes left Henry unable to form any new personal memories”

Reading about HM’s anterograde amnesia is like seeing Memento again.