Abstract
Misanin, J. R., T. D. Hoefel, C. A. Riedy and C. F. Hinderliter. Remote and proximal US preexposure and aging effects in taste aversion learning in rats. Physiol Behav 61(2) 221–224, 1997.—Age as a factor in the effect of proximal and remote unconditioned stimulus (US) preexposure on conditioned taste aversion in weanling, young adult, and old rats was studied in 2 experiments. In Experiment 1, 6 daily US preconditioning exposures attenuated conditioning in weanlings and young adults, but not in old rats. In Experiment 2, exposure to a single US 1 h before the conditioning trial curtailed conditioning at all age levels. These results are explained in terms of age differences in familiarity with the conditioning context and Wagner's information-processing model for self- and retrieval-generated disruption of conditioning.
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