Habituation to illness: Effects of prior experience with the US on the formation of learned taste aversions in rats |
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Authors: | Nancy Woodard Cain Ronald Baenninger |
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Institution: | 1. Department of Psychology, Temple University, 19122, Philadelphia, Pennsylvania
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Abstract: | Experiment 1 investigated the effects of US habituation on the acquisition and extinction of learned taste aversions in rats. Subjects receiving five noncontingent LiCl intubations prior to conditioning failed to develop a conditioned taste aversion, while control subjects experiencing a single saccharin/LiCl pairing displayed a pronounced taste aversion which weakened during subsequent poisonings. Experiment 2 examined whether habituation, defined as a waning of responses to repeated presentation of an illness stimulus, was a possible mechanism for explaining the results of Experiment 1. Subjects showed a decrease in motor activity following an initial LiCl intubation, but less attenuation of activity with successive intubations. |
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