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Unformatted text preview: 2/25/09 Learning & Memory Learning and Memory ‐ the story of H.M. • Pa<ent HM (1950’s): – Severe epilepsy following bicycle accident – Bilateral medial temporal lobes removed @ age 27 – Included hpc & amygdala + surrounding ctx HM’s lesion: bilateral medial temporal lobe removal Entorhinal ctx amygdala Entorhinal ctx hippocampus hippocampus 1 2/25/09 HM = no hippocampus, amygdala, overlying (rhinal) cortex normal hpc HM = no hpc, no rhinal ctx Learning and Memory ‐ the story of H.M. • Pa<ent HM (1950’s): – Special b/c of extensive tes<ng prior to surgery – Seizures reduced – Intelligence, personality intact – BUT severe memory problem Memory systems • Deﬁni<on: short‐term memory (STM) – Flee<ng ‐ seconds to minutes – 7 +/‐ 2 chunks of info – Need to rehearse (remember phone # long enough to dial it) – Tests: digit span, phone number – Working memory = processing info (test would be bkwd digit span) 2 2/25/09 H.M. • STM ok (when not distracted) but can NOT form new LTM • M...
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This note was uploaded on 03/23/2009 for the course PSYC PSYC2 taught by Professor Aimeewilson during the Winter '09 term at UCSD.
- Winter '09