Weanling and senescent rats process simultaneously presented odor and taste differently than young adults |
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Authors: | C F Hinderliter J R Misanin |
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Institution: | University of Pittsburgh at Johnstown 15904. |
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Abstract: | Weanling, young-adult, and senescent Wistar albino rats had a novel odor/taste stimulus or a single taste stimulus either paired or explicitly unpaired with the unconditioned stimulus, lithium chloride. Animals were then given a saccharin vs water preference test. Standard preference scores indicated that the odor competed with taste for association with the US in young-adult rats but potentiated the conditioned aversion to taste in weanling and senescent rats. Results were interpreted in terms of age-related attentional differences which were hypothesized to account for infantile amnesia and for the memory dysfunction typically observed in senescent animals. |
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