The Effects of Morphine on the Discrimination of Subject-Produced and Experimenter-Imposed Durations
Date of Award:
5-2005
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Psychology
Committee Chair(s)
Amy L. Odum
Committee
Amy L. Odum
Committee
Carl Cheney
Committee
Tim Shahan
Committee
Donna Gilbertson
Abstract
Experiments on the effects of drugs on behavior maintained by temporal-discrimination procedures have led to discrepant results. Recent experiments suggest that the effects of drugs may differ depending on whether the subject is timing some aspect of its own behavior or some other stimulus. The present experiment used a multiple-schedule procedure composed of a subject-produced and experimenter-imposed component. In the subject-produced component, pigeons categorized the duration of their most recently emitted interresponse time. In the experimenter-imposed component, pigeons categorized the duration of a key light. Morphine generally produced underestimation of time during the subject-produced component, a result in agreement with other recent experiments. Morphine had no systematic effects on accuracy during the experimenter-imposed component. These results are discussed in terms of procedural interactions and a morphine-induced disruption of stimulus control.
Checksum
14c9eb0cc06053ed2204a31af62133f6
Recommended Citation
Ward, Ryan D., "The Effects of Morphine on the Discrimination of Subject-Produced and Experimenter-Imposed Durations" (2005). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 6224.
https://digitalcommons.usu.edu/etd/6224
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