PSYC 2330 Study Guide - Midterm Guide: Conditioned Taste Aversion, Aplysia, Habituation

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Published on 12 Apr 2013
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2330 Midterm 1 Practice Questions
1. Taste aversion learning is most likely to occur with a food or beverage that has ____ features
a) Novel
b) Familiar
c) Changing
d) Stable
e) All of the above
True for taste aversion, also for other forms of conditioning. To become good CS, typically has to be noticeable
2. According to Hull, S-R associations become stronger as a function of how often they are followed by:
a) Stimuli that have weak incentive value
b) Stimuli that produce drive
c) Stimuli that satisfy need and reduce drive
d) Stimuli that are unexpected
e) Novel stimuli
STUDY Hull’s model Several needs, but only 1 drive motivational fuel for drug seeking is same that is activated when you are
seeking food/sex etc. Drive is unique, but the difference is that need for food will produce a variety of stimuli in your body that are
different than need for drug
3. Experiments performed in the Aplysia (marine slug) have demonstrated that habituation is cause by:
a) Increase in withdrawal reflexive reactions (opposite of habituation)
b) Reduction of interest in task (difficult to probe interest of slug)
c) Reduction of pool of synaptic vesicles (will release less neurotransmitter)
d) Expression of synaptic extracellular potassium (not discussed in course)
e) Increase in intracellular sodium (not discussed in course)
4. A conditioned inhibitor (CS-)
a) Has no predictive value (not true predicts that not going to get US)
b) Would be slower to condition to US (take longer to turn into CS+)
c) Predicts an inhibitory US (US-) (does not exist - still biologically significant stimulus)
d) Enhances acquisition of conditioned excitor (CS-) ()
e) Has no motivational value
5. Assuming αβ = 1 and V5 = 1, the value of ΔV after first extinction trial is?
a) 0
b) -0
c) 1
d) -1
e) The value cannot be calculated
Use R-W Model, Vmax at extinction = 0 ΔV = 1(0-1) = 0
Dopaminergic neurons activated with CS (mic) when conditioned to US (pen). What if you are shown the US alone? What
predicts US? Either nothing, or another CS
Drive is equivalent to fuel. If no drive, no behaviour same with behaviour that is goal directed
o Drive is aspect of addiction as well as motivated behaviour
Conditioned inhibitions, alternate trials (CS+US)+(CS+/CS- no US) CS becomes inhibitor
o Two ways to test retardation of CS (will take longer if conditioned inhibitor), summation test
Latent inhibition: negative associative value
o Habituation and Sensitization Non Associative
Post-conditioning evaluation CS+US, etc. do it number of times so you have stable CR. Is it automatic response to CS? Is
subject using CS as predictor, or has it become habitual?
S-R (Hull) operant conditioning, S-S (Pavlov) classical conditioning
o R = response (learning), not CR/UR, it is an action
o CS-US
In blocking you can never get ve sign, never will be 1-2, etc. Cannot lose learning
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Document Summary

Taste aversion learning is most likely to occur with a food or beverage that has ____ features. 2330 midterm 1 practice questions: novel, familiar, changing, stable, all of the above. True for taste aversion, also for other forms of conditioning. Study hull"s model several needs, but only 1 drive motivational fuel for drug seeking is same that is activated when you are seeking food/sex etc. Increase in withdrawal reflexive reactions (opposite of habituation: reduction of interest in task (difficult to probe interest of slug, reduction of pool of synaptic vesicles (will release less neurotransmitter, expression of synaptic extracellular potassium (not discussed in course) 0: 1, -1, the value cannot be calculated. Use r-w model, vmax at extinction = 0. Dopaminergic neurons activated with cs (mic) when conditioned to us (pen). If no drive, no behaviour same with behaviour that is goal directed: drive is aspect of addiction as well as motivated behaviour.

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