Abstract
D-Amphetamine was administered to rabbits performing a “difficult” and an “easy” classical discrimination task. The drug had no significant effect on overall nictitating membrane responding whereas it debilitated heart rate responding. Heart rate discrimination was debilitated for both tasks; however, amphetamine facilitated nictitating membrane discrimination for the “difficult” task while having no effect on the “easy” task. The results are discussed in terms of support for the “cue-monitoring” interpretation of amphetamine facilitation and the observed divergence of response systems in the rabbit.
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The authors wish to express their thanks to J. L. Yehle for his invaluable assistance in the construction of the electronic programming equipment.
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Peel, W., Yehle, A. Differential effects of d-amphetamine in classical discrimination conditioning of rabbits. Psychon Sci 14, 210–211 (1969). https://doi.org/10.3758/BF03332796
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DOI: https://doi.org/10.3758/BF03332796