Amnesia F08 - Amnesia Amnesia = A(without MNESIA(memory...

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Amnesia Amnesia = A (“without”) + MNESIA (memory) Neuropsychology : the branch of psychology where function & structure intersect; e.g., what parts of the brain may be specialized for memory storage and retrieval? For different kinds of memories? I. Types of Amnesia A. Retrograde Amnesia : 1. Classic soap-opera type amnesia, where due to some trauma (e.g., a car accident), a patient forgets part of their past 2. Typically, only the recent months or years just before the trauma are lost
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E.g., Butters & Cermak (1986) studied P.Z., an eminent scientist who developed Korsakoff’s syndrome** in 1965 (at age 65). When tested on other famous scientists & personal information, he could best recall the distant past. Results Memory for events from autobiography % remembered 1916-30 70 1930-40 50 1940-50 41 1950-60 30 1960-70 0 1970-80 0 **due to a thiamin deficiency caused by chronic alcoholism. The thiamin deficiency is particularly acute in the hippocampus.
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B. Anterograde Amnesia : 1. difficulty in learning new information after a trauma 2. Classic case: H.M. , with bilateral damage to temporal lobes & underlying hippocampus --I.Q. of 118, and digit span of 7, but severe longer-term memory deficits --may read the same newspaper over and over --he can remember much of his past before the operation (some retrograde amnesia) --after 6 months at a new job, could not give a description of what he does, route to work, etc. --shows improvement at motor tasks (e.g., mirror tracing), simple mazes
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C. Both 1. Many patients, such as those with Korsakoff’s syndrome, suffer from both retrograde and anterograde amnesia. 2. There are varying degrees of amnesia; H.M.’s deficits are among the most severe. II. Fractionation of Memory Systems A. Declarative Memory l. Semantic memories : our knowledge of facts, and meanings ( e.g., the plot of Hamlet ) 2. Episodic memories : our memory for specific events that have happened to us
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This note was uploaded on 12/17/2010 for the course PSY 43785 taught by Professor Reed during the Spring '10 term at University of Texas.

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Amnesia F08 - Amnesia Amnesia = A(without MNESIA(memory...

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