LTM(2) - Long-Term Memory (LTM) Anterograde amnesia...

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1 Long-Term Memory (LTM) Anterograde amnesia Retrograde amnesia “You have to begin to lose your memory, if only in bits and pieces, to realize that memory is what makes our lives. Life without memory is no life at all… Our memory is our coherence, our reason, our feeling, even our action. Without it, we are nothing…” - Louis Bunuel Information processing model: Memory stores SENSORY STORE (sensory memory) SHORT TERM MEMORY LONG TERM MEMORY INPUT Limited capacity Rapid loss of info Acoustic coding (typically) Large capacity Short duration decay interference Unlimited capacity Retained indefinitely Semantic coding (typically) info “lost” if retrieval cues are lost
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2 Evidence for the existence of STM/LTM distinction Physiological evidence Hippocampal damage HM (epilepsy) Korsakoff ʼ s Syndrome (can ʼ t learn new things) STM is maintained, but no info transfer to LTM Psychological evidence Capacity restrictions of STM vs. LTM Serial position effect (Rundus, 1971) Serial position effect in recall Serial Position Proportion Correct Serial position effect in recall Which words are most likely to be retrieved from LTM later? What happens to the primacy effect if each word is rehearsed equally often? Where does recency come from? What would HM ʼ s curve look like? Control processes (strategies) For getting things (from STM) into LTM Rehearsal Coding Imaging (and other acquisition strategies) For retrieving things from LTM (e.g., state names) Organizing search alphabetically v. geographically Using the same cues in retrieval that you used in encoding
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3 Forgetting sometimes you suddenly remember something you haven't thought about in years. sometimes you seem to have forgotten something but you remember it later. sometimes you can recall a few features of something, but not all if it. sometimes you get stuck on a word - you know you know it, but you just can't say it (TOT effect) sometimes you can't recall something, but you can recognize it. sometimes you can't even recognize it, but if you r e learn it, it takes less time. Forgetting Everyday memory questionnaire: How often… Do you decide to do something in a few minutes, then forget to do it? Do you fail to recognize a place you
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LTM(2) - Long-Term Memory (LTM) Anterograde amnesia...

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