110Lecture4Handout

110Lecture4Handout - Lecture 4: Excitatory conditioning...

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Lecture 4: Excitatory conditioning Reprise Events and their relation Pavlovian conditioning Critical control conditions Excitatory conditioning Appetitive conditioning Aversive conditioning What is learned in excitatory conditioning Testing behavioral vs. cognitive theories of learning
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The reduction in the orienting response to a light or in the startle response to a loud noise over presentations is referred to as habituation : Habituation: 1. Is not due to physical damage (it spontaneously recovers with time) 2. Is not due to sensory adaptation or fatigue (it recovers following the presentation of a novel stimulus; I.e. dishabituation) 3. Should be differentiated from sensitization which is an increase in responsiveness to sensory events produced by increased autonomic arousal Sensitization can give rise to pseudoconditioning
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Control conditions - summary In order to assert that any change in behavior to a CS produced by pairing a CS with a US is due to that pairing, it is important to rule out changes in behavior due to: - the CS alone (e.g. habituation) - the US alone (e.g. sensitization) - mere exposure to both the CS and the US. In practise , the best control against which to compare a group getting the CS and US paired (i.e. CS - US), is a group that gets both the CS and US unpaired (I.e. CS / US). This controls for all of the above conditions.
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Experiments that arrange the delivery of two events (say a CS and a US) such that:
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This note was uploaded on 04/21/2009 for the course PSYCH 110 taught by Professor Fanselow during the Spring '06 term at UCLA.

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110Lecture4Handout - Lecture 4: Excitatory conditioning...

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