Pavlovian Conditioning Mechanisms 2 Flashcards
conditioning can result in _____ response to UCS, especially for _______ conditioning
changed
aversive (drug)
what can happen in aversive conditioning
CS can elicit conditioned analgesia, reduction in pain to UCS
conditioned release of endogenous opioids
reduced CR
what is conditioned analgesia in drugs
conditioned tolerance
drug cues alone elicit b process, danger of overdose
no CS but UCS, b process doesnt start, danger of overdose
what is the blocking effect
previously learned info abt CS-UCS prevents new associations of a new CS to UCS
we already know what works, dont need to learn new rule for nothing, provides little info, can be ignored
- coffee smell = coffee, dont need to learn that coffee sign = coffee
what is the rescorla-wagner model (RWM)
learning is engaged by unexpected events, not fully predicted ones
if US not surprising (diff from what expected), no learning
what model assumes that the degree of surprise relates to the conditioned properties btw CS-UCS
rescorla-wagner model
in rescorla-wagner model, what is strong and weak conditioning
strong: learning, strong prediction of UCS (dark cloud - rain)
weak: low expectation of UCS (sun =/= rain)
what does the rescorla-wagner equation say
associative strength of CS and UCS is proportionate to how well CS predicts UCS * expected vs what happened
what we learn on given trial is based on diff btw expected and happened (how surprising it is)
when do we learn most
when surprising
the diff btw what happens and what is expected _______ over time
reduces
when do we stop learning/paying attention
when CS-UCS association is well learnt and fully predictive
what is synonym for rescorla-wagner model and why
prediction error model
measures degree of err in prediction CS - UCS
how does the RWM relate to the blocking effect
when we can fully predict UCS with CS, stop learning
T.F. RWM predict that stimuli gain associative value if presented together on a conditioning trial after being trained separately
F. lose associative value
A = 1
B = 1
A+B = 1
A = 1/2
B = 1/2
What is extinction
UCS is no longer presented after CS