Classical Conditioning I Flashcards
CS+
CS becomes an exciter of behaviour
CS causes a response
Differential Inhibition/ Negative CS-US Contingency or Correlation
CS1 -> US
CS2-> No US
Pair a yellow card with food, and a blue card with nothing and see which one causes a reaction
CS2 becomes inhibitor or behaviour (CS-)
Pavlov’s Conditioned Inhibition
CS1-> US
CS1+CS2-> No US
CS 2 cancels out CS1
Pair yellow card with food until squirrel is trained to get excited when they see the yellow card. Then pair blue card and yellow card at the same time, but no food. At first squirrel should get excited, over time, squirrel will not be excited, when blue is also present
Testing Conditioned Inhibition
Tests training (induction) of conditioned inhibition
Summation
Retardation of acquisition
Summation/ Compound Stimulus
CS 3 (a CS+) is presented with CS 2 = no CR
Test CS with any other CS+
Gold card paired with food. Present gold and blue card, if no CR (or minimized CR), then CS 2 is an inhibitor. Inhibitor should work against other stimuli, not just the one it was trained with
Retardation of Acquisition
CS 2-> US = CR will develop very slowly
Pair blue card (CS-) with food until CR develops, but the time it takes to condition takes longer. Better way to establish how STRONG the CS- is (longer it takes, stronger the CS-)
Fear Conditioning
US- foot shock
UR- jumping
CS- light/tone/context
CR- Automatic and somatic responses (rat freezes, increased heart rate, stress hormones)
Conditioned Place Preference
Inject rat with vehicle (saline or water) in drug compartment
Let rat run around in box for half an hour
Inject rat with heroin the next day in drug compartment and let run around for half an hour
Repeat 4 times, then put drug free rat in box
Increases drug dose= more time spent in compartment (CS+)
S-S* Learning
Stimulus-Stimulus learning
Cs-US learning
Star implies biological importance
Alternative to S-S* Learning- Pseudo Conditioning
Increased response to CS that occurs because of mere exposure to the US
i.e. rat enters white compartment because you gave them heroin (doesn’t matter that you gave the heroin in the white box). Maybe the heroin makes the rat respond more to the white than black
Alternative to S-S* Learning- Sensitization
Increased responding to the Cs occurs because of mere exposure to CS
i.e Rat prefers white room because you put him in the white room a number of time
Solution- give the rat heroin somewhere else
Alternative to S-S* Learning- S- R Learning
Cs centre directly activates UR centre, completely bypasses US centre (S-S theory suggests that CS centre activated US centre which activates UR centre)
i.e.
Us- stranger
CS- doorbell
Response- barking
Press doorbell, dog barks even though you are not a stranger
by passes stranger centre (US centre), goes directly from door bell centre to response centre
Test for S-R Learning: US Devaluation
Eat lots of sushi, get sick, drive by restaurant the next day
If salivation occurs, then S-R because you bypass the sushi centre
If salivation does not occur, then S-S because you associate the restaurant with sushi and the sushi made you sick
Second Order Conditioning
First Order CS- tone
First Order Conditioning- pair tone with food until tone induces salivation (don’t present at the same time)
Second order CS- light
Second Order Conditioning- pair light with tone (no food)and see if light induces salivation- show light and then tone, not at the same time
Sensory Preconditioning
Sensory Preconditioning- Present tone and light at the same time (no food)
Conditioning- Present tone, then present food
Test- Tone induces salivation, light induces salivation as well
Conditioned Responses
Autonomic (increase in heart rate, salivation, sweating…etc)
Motivational (emotions)
Somatic (movement towards/ away stimulus)
i.e. Ice cream (US), music from ice cream truck (CS)
Salivation- autonomic
Excitement- motivational
Running towards truck (somatic)
Suppression Ratio
Index used to measure reduction responding for food during presentation of a CS associated with aversive US
Suppression Ratio Index= B/(A+B)
B= # of responses during CS A= # of responses before presentation of CS
If no fear, A=B and SR= 0.5, if lots of fear, then B=0 and SR=0
Strength of Conditioning- Laws of Association
Frequency of CS- US association
Intensity and novelty of CS and US
Contiguity
Contingency
Contiguity
CS- US sequence/ timing- sequence in time that a CS/US is presented
Delayed conditioning
Trace conditioning
Simultaneous conditioning
Backward conditioning