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23-amnesia - Memory III Amnesia Overview Causes and...

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Memory III Memory III Amnesia Amnesia
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Overview Overview Causes and symptoms of amnesia Case study: HM Stages of memory formation Encoding and Consolidation What does memory loss tell us about memory? Kinds of memory Spared and impaired abilities in amnesiacs
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Overview Overview Causes and symptoms of amnesia Case study: HM Stages of memory formation Encoding and Consolidation What does memory loss tell us about memory? Kinds of memory Spared and impaired abilities in amnesiacs
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Amnesia Amnesia “A man's memory is all that stands between him and chaos” A. L. Korsakoff Pioneering research by Korsakoff (1889) Profound long-term memory loss Intact intelligence Spared short-term and sensory memory Types of memory deficits: Anterograde : unable to form new memories Retrograde : loss of old memories
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Amnesia Amnesia Anterograde Retrograde Anterograde
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Patient HM Patient HM ( Scoville Scoville & Milner, 1957) & Milner, 1957) Brain surgery to reduce epilepsy Dense anterograde amnesia He will “read the same magazines over and over again without finding their contents familiar” “This patient has eaten luncheon in front of one of us … without being able to name, a mere half-hour later, a single item of food he has eaten; in fact, he could not remember having eaten luncheon at all” BUT : some learning of new events Little retrograde amnesia Remembers childhood Recognizes famous people from before surgery (1953) BUT : some loss of old memories
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Patient HM Patient HM ( Scoville Scoville & Milner, 1957) & Milner, 1957)
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