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Fall 2011 Copyright 2011 PSYCHOLOGY 110 PROFESSOR MINOR SET 2 October 4 2011 The activity of the interneuron does not parallel behavior They didn t give up on this yet they decided that there must be two processes going on state and the S R reflex arc Simple Event Presentations Habituation Sensitization Dual Process Theory Groves Thompson 1970 o Characteristics of the S R system o Characteristics of the state system o Applications Habituation Dishabituation Groves Thompson 1970 Dual Process Theory o o o Wanted to study neuroscience Started off by smacking you in the head to get you to blink looking at habituation Wanted to look at the underlying neural systems that mediated habituation Shocked the bottom of a rabbits foot and measure how high he lifts his foot paw flexion reflex Recording electrode sensory motor S R Reflex arc see above Characteristics of the S R reflex arc 1 Responsible for habituation 2 Activity is stimulus specific 3 neurons specific stimulation 3 Determines the form of response foot shock foot movement 4 Activity in arc is directly related to magnitude of stimulus 5 Activity is bitonically related to rate curve goes up and then comes down 6 Activity spontaneously decays goes away slowly Characteristics of State system arousal general may things can arouse you and these things can sum 1 Responsible for sensitization 2 Not stimulus specific If neuroscience works then the activity of the interneuron should parallel that of the PFR You get 1 3 4 5 Determines the magnitude of response Activation can accumulate over time Activity spontaneously decays spontaneous we don t know the process STATE PFR Response specific stimuli so it will be close to where the 10 trial group was on trial 2 If the state system was responsible for dishabituation then dishabituation is caused by the arousal caused by the novel tone First trial they should be equal same if S R is responsible but because the arousal caused by the tone will spontaneously decay across the 10