PSB-2000 Lecture Notes - Lecture 15: Retrograde Amnesia, Anterograde Amnesia, Radial Arm Maze
Document Summary
Working memory is alternate way of thinking of stm. Lasts hours to days w/o rehearsal: where car is parked, when/where lunch date is. Could be forgotten and then later remembered w/ appropriate cues. Phone # vs. names of grade school teachers. Time needed for consolidation varies, especially depending on familiarity of topic. Hippocampus, nearby cortex, parts of the thalamus. Skills and habits - cortex, basal ganglia, cerebellum. H. m. was an epileptic who had his temporal lobes removed in 1953. His seizures were dramatically reduced, but so was his long term memory. H. m. experienced both mild retrograde amnesia and severe anterograde amnesia. Partial retrograde amnesia for ~2 years preceding operation; remembers childhood. Hippocampus is not storage place of long term memory. Severe anterograde amnesia for explicit memories and spatial memory. Repetition priming tests: used to assess implicit memory; performance in identifying word fragments is improved when the words have been seen before.
