Memory overview - LTMp - EXP 3604 Memory Overview Long-Term...

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Unformatted text preview: EXP 3604 Memory Overview Long-Term Memory Why Study Memory? The Man who Mistook His Wife For a Hat (Oliver Sacks) He is isolated in a single moment of being, with a moat or lacuna of forgetting all around him. He is a man without a past (or future), stuck in a constantly changing, meaningless moment a man without roots, or rooted only in the remote past (1985, p. 29). Atkinson-Shiffrin Model Iconic Memory (visual) Echoic Memory (auditory) Sensory Memory Purpose Passively registers input & briefly retains stimulus trace after stimulus vanishes Functions Helps us retain info that doesnt last long Aids perception by allowing you to continue processing after the stimulus is gone Keeps accurate record of stimulation so most important can be processed further Duration Very brief .5 sec for iconic memory, 2-4 sec for echoic memory Capacity Large, and fairly accurate How encoded Raw, unprocessed form Not under conscious control Passively registered Sensory Memory Characteristics Sensory Memory Short-term Memory Long-term Memory Iconic / Echoic STM LTM Brief duration (.5 sec / 4 sec) Relatively short duration (30 sec) Semi-permanent (minutes to years) Relatively large capacity Limited capacity HUGE capacity Info encoded in raw, sensory form Info encoded acoustically Info encoded semantically Passive transfer to STM Active transfer to LTM N/A Rapid forgetting Relatively rapid forgetting May or may not be forgotten Atkinson-Shiffrin Model Support for A & S model Two serial position effects Primacy Effect Better recall for words at beginning of list Recalled from LTM Recency Effect Better recall for words at end of list Recalled from STM Serial Position Curve Support for A & S model Effect on serial position curve Speeding up presentation rate? Eliminate primacy effect Delaying the start of recall with an interfering task? Eliminate recency effect Serial Position Curve Neurological Evidence Support for A & S model H.M: brain lesion patient Neurosurgery to treat severe epileptic seizures in 1953 (age 27) H.M.s Surgery Bilateral removal of large portions of temporal lobes: Most of hippocampus, surrounding cortex, and amygdala H.M. -- Quotes Right now I'm wondering, Have I done or said...
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This note was uploaded on 01/24/2010 for the course PSYCHOLOGY PCO 4930 taught by Professor Perrin during the Fall '09 term at Florida State College.

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Memory overview - LTMp - EXP 3604 Memory Overview Long-Term...

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