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Lecture 2

PSYC 3410 Lecture Notes - Lecture 2: Classical Conditioning, Eyeblink Conditioning, Conditioned Taste Aversion

Course Code
PSYC 3410
Elissa Rodkey

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Classical Conditioning Basics
-unconditioned stimulus (US) elicits an unconditioned response (UR)
-Neutral stimulus (NS/CS) + Unconditioned Stimulus (US) elicits an unconditioned response
-Conditioned Stimulus (CS) elicits conditioned response (CR)
The neutral stimulus becomes the conditioned stimulus after the behaviour has become
Commonly Studied Conditioned Behaviours
-Conditioned Emotional Response (fear)
using an aversive unconditioned stimulus to cause the conditioned stimulus to elicit a
fearful conditioned response
the response of fear is the absense of behaviour
Suppression ratio = CS responding
CS responding + pre-CS responding
0 = perfect learning, 0.5 = no learning
conditioned stimulus is not necessarily treated as if it were the unconditioned stimulus
-taste aversion learning
there is a long delay between eating food and feeling ill, even if the food didn’t directly
make you sick
can last a lifetime after only one exposure
-eyeblink conditioning
a bell precedes the puff of air
-proboscis extension reflex
the bees who per (stick out their tongues) to sugar water are then conditioned to respons to
explosive chamicals with the sugar water as a reward
the bees are trained to stick out their tongues in response to explosive chemicals
-Backward Conditioning
the unconditioned stimulus precedes the neutral stimulus
child gets a lollipop after an injection, then the child might not like the lollipop
often with pain because you feel the pain first and then check to see what the simulus was
that caused the pain
-delayed conditioning
the neutral stimulus is still on when the unconditioned stimulus has its onset
little albert experiment
-trace conditioning
there is a long time delay between the neutral stimulus and the unconditioned stimulus
taking medication
food intolerance
-simultaneous conditioning
sight + odour of food
two stimuli that are part of the same overall stimuli
phone vibrates and rings at the same time
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