PSYC 325 Study Guide - Parietal Lobe, Electroconvulsive Therapy, Thalamus

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Published on 16 Apr 2013
School
Simon Fraser University
Department
Psychology
Course
PSYC 325
Professor
CH 10 Lec 8
-Amnesia
oMemory deficits acquired through brain damage
oAnterograde
When mild. People may return to work, home, use compensatory
devices
When severe, patients need constant care as they may forget
where they are or where home is
-Patient HM
oThe study of patient HM initiated the modern study of amnesia
oNeurosurgeon William Scoville removed HM’s Hippo as treatment for
epilepsy
oSevere anterograde amnesia
oEverything still intact (including WM), but he could no longer encode
new info
-Clive Wearing
oMusician
oContracted viral encephalitis, damaging MTL and Prefrontal lobes
oSevere anterograde AND retrograde
oAffects episodic
-Case RB
oMTL damage, restricted lesion of part of hippo, microscopic lesion of
CA1 pyramidal cells in hippo
oDense anterograde amnesia, some retrograde (2years)
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-HIPPO: learning and memory – anterograde
-MTL: learning and memory – anterograde
-MAMMILLARY BODIES: learning – anterograde
-Amnesic syndrome
oAware of their deficits
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oImpairment of encoding new info to episodic and semantic while other
cog functions intact
oDamage to hippo and/or MTL
oImplicit Memory
Preserved ability to perform tasks that are influenced by a past
event without person being aware of the event experience
Word fragment completion(implicit memory in amnesic
syndrome)
Subject is given some letters and must figure out word
(eg. S_h_l_r . “scholar”)
Repetition priming is known to make solving them easier
oMemory Conversations (conversations about past
events/memories). How do amnesiacs do it?
Memory importation
They described a memory from before injury as if it had
happened after
Memory appropriation
Using someone else’s retelling of an event as it had
happened (using semantic memory instead of episodic)
Memory compensation
Instead of answering question about past, they talk about
issues with their syndrome
oMethod of vanishing cues
Schacter used this method . through many repititions,
associated the words run the antivirus program with Norton.
Then slowly took letters of Norton away until the word could be
thought of through “run the antivirus software”, eventually all
cues were taken away and even though she didn’t remember
anything, she would know what to do when prompted.
oPatient KC
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Document Summary

Amnesia: memory deficits acquired through brain damage, anterograde. People may return to work, home, use compensatory devices. When severe, patients need constant care as they may forget where they are or where home is. Clive wearing: musician, contracted viral encephalitis, damaging mtl and prefrontal lobes, severe anterograde and retrograde, affects episodic. Case rb: mtl damage, restricted lesion of part of hippo, microscopic lesion of. Ca1 pyramidal cells in hippo: dense anterograde amnesia, some retrograde (2years) Amnesic syndrome: aware of their deficits, impairment of encoding new info to episodic and semantic while other cog functions intact, damage to hippo and/or mtl, implicit memory. Preserved ability to perform tasks that are influenced by a past event without person being aware of the event experience. Word fragment completion(implicit memory in amnesic syndrome: subject is given some letters and must figure out word (eg. s_h_l_r . Scholar : repetition priming is known to make solving them easier, memory conversations (conversations about past events/memories).

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