Lecture 13 - I Drugs cont Tolerance and Withdrawal II...

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Unformatted text preview: I. Drugs, cont.: Tolerance and Withdrawal II. Memory: What It Is A. 3 Steps – Encoding, Storage, Retrieval B. Atkinson-Shiffrin Model III. Memory Changes, is Flexible (Good News and Bad News) A. Protect Your Memory B. Fragile Memory and Eyewitness Testimony Tolerance/Withdrawal—How Does it Occur? • Many ways. Here are 2… For cocaine users, dopamine (and neurepinephrine) increases quickly while ‘high’, but then supply is depleted. This makes future effects of the drug less potent, and the dopamine system less efficient. For chronic methamphetamine users, neuron endings (synaptic terminals) storing and releasing dopamine are actually destroyed. Final note: Instead of or in addition to physical/bodily dependence, there is often psychological addiction with drugs. These come from habits and learned associations: e.g. my friends all do this drug when we hang out smoking and drinking brewing coffee, meeting friends at a coffeehouse Memory --- What Is It? • The ability to recall past events, ideas, or previously learned information • The storage system that allows a person to retain and retrieve the information Memory: A Process Involving 3 Steps Encoding : when information is first learned, organizing it...
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This note was uploaded on 03/31/2008 for the course PSYC 2004 taught by Professor Dmharris during the Fall '06 term at Virginia Tech.

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Lecture 13 - I Drugs cont Tolerance and Withdrawal II...

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