Timing during inhibitory conditioning |
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Authors: | Williams Douglas A Johns Kenneth W Brindas Mirna |
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Institution: | Psychology Department, University of Winnipeg, Winnipeg, Manitoba, Canada. d.williams@uwinnipeg.ca |
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Abstract: | Analyses of second-by-second conditioned responding into a food receptacle by hungry rats (Rattus norvegicus) found that inhibition varies across the duration of a conditioned stimulus (CS) in a manner consistent with initial training. Variations in the arrival time of the unconditioned stimulus (US) supported temporally specific suppression of responding (Experiment 1). Summation and retardation tests (Experiments 2 and 3, respectively) revealed that points of greatest inhibition coincided with US omission at the time normally specified by the excitor. Our data provide a clear demonstration of fine-grained changes in the time course of inhibitory conditioning for the first time. |
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