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88 Pages • Complete Study Notes • Year: Pre-2021
PSYC2910 - Brain and Behaviour Learning and Motivation Classical Conditioning (Pavlovian) - Pairing stimulus with neutral stimulus conditioned response - US + Neutral UR - Neutral stimulus becomes conditioned; CS CR - Examples: o Taste aversion, fear condition (phobias) o Conditioned compensatory response to drugs (higher pain sensitivity in anticipation of morphine i.e. lowering effects of drug) ▪ Taking drugs in unfamiliar situation higher sensitivity overdose - Blocking: Pairing new neutral stimulus (CS2) with existing CS1 + US does not condition CS2 CR o New conditioning/learning occurs w/ prediction error: CS1 does not lead to outcome unless CS2 is paired w/ it - Factors affecting conditioning: o Higher intensity of CS and US greater learning o Higher intensity of outcome/reinforcer greater learning o CS and US are new o Biological preparedness for association e.g. sickness (US) w/ flavour (CS) - Extinction: Presenting CS without US i.e. outcome not present (prediction error) o Systematic exposure to eliminate phobias; showing that CS does not US (feared event) o However spontaneous recovery or renewal effect might occur o *Does not ‘unlearn’ but inhibits R - Habituation: Decrease in UR after repeated presentation of US
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