18 Learning and Memory Notes Copy.pdf - 18 Learning t Memory PortraitTheMystery ofMemory Scovilleperformed lobe resection seizures lessened

18 Learning and Memory Notes Copy.pdf - 18 Learning t...

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18 Learning t Memory PortraitThe Mystery of Memory HM experienced general epileptic seizures Scoville performed bilateralmedial temporal lobe resection seizures lessened but experienced severe amnesia areas of scarring in both hemispheres visible mark on parahippocampal gyrus on right hem IQ was above are limited memory after surgery unableto describe work performed well e perceptual tests he was doing after 6 mo memory 134 surgery was good unable to find his way home after moving able to recall past events can't remember what he had just eaten amnesia partial total loss of memory 2 findings from case of HM 1 many kinds of memory exist mediated by diff neural systems 2 selective brain damage can result in loss of memory abilities Dr Wilder Penfieldsevere anterograde memory impairment nonewmemories Dr Brenda Milnerstudied memory deficits resulting from bilateralremoval of medial temporal lobe Global anterograde amnesia ability to learn remember are affected Impairedspatial topographical learning results began to Impaired learing about effects occuring around him uncover evidence for multiple LT 18.1 Learning Memory Amnesia memory systems diff men diff Sys Anterograde Retrograde Amnesia Anterograde Amnesia inability to aquire new memories Retrograde Amnesia Inability to remember events b 4 onsetof amnesia HMhad both but older memories were better preserved Time Dependent Retrograde Amnesia TraumaticBrain Injury TBI commonly produces Time Dependent Retrograde Amnesia severity of injury determining how far back in time amnesia extends ex after head trauma transient lossof consciousness followed by short period of confusion retrograde amnesia is typical extent of retrog amnesia shrinks in time leavesresidual amnesia few Sec min for events immediately preceding the injury Old memory preservation us recent memory loss Three Theories Of Amnesia Whatmakes the memory Sys underlying 2forms of amnesia partially independent System consolidation Theory Larry squire Peter Bayley Role of
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