| Stimulus compounding in interval timing: the modality-duration relationship of the anchor durations results in qualitatively different response patterns to the compound cue. | |
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MedLine Citation:
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PMID: 20718546 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We have previously demonstrated that rats trained on a two-duration peak procedure in which two modal signals (i.e., tone and houselight) predicted probabilistic reinforcement availability at two times (10 s and 20 s) would respond in a scalar manner at a time between the trained durations in response to the simultaneous compound cue (tone + houselight). In these experiments, we evaluated whether this scalar response pattern would remain with greater relative separation between the anchor durations. Results revealed an effect of the modality-duration relationship, such that scalar responding was seen on compound trials in rats trained that the auditory stimulus signaled the shorter duration, whereas the visual stimulus signaled the longer duration, but not in the reverse condition. In rats showing scalar responding on compound trials, post hoc analyses demonstrated that the peak time of compound responding was most accurately predicted by the reinforcement probability weighted average of anchor peak times. In contrast, rats trained that the visual stimulus signaled the shorter duration, whereas the auditory stimulus signaled the longer duration, responded in a highly rightward skewed manner. In these rats, initiation of responding to the compound stimulus appeared to be controlled by the visual stimulus only, whereas response terminations reflected control by both modal stimuli. These latter data provide evidence of separate determinants of response initiation and termination. |
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Authors:
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Dale N Swanton; Matthew S Matell |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of experimental psychology. Animal behavior processes Volume: 37 ISSN: 1939-2184 ISO Abbreviation: J Exp Psychol Anim Behav Process Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-02-08 Completed Date: 2011-06-01 Revised Date: 2012-01-04 |
Medline Journal Info:
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Nlm Unique ID: 7504289 Medline TA: J Exp Psychol Anim Behav Process Country: United States |
Other Details:
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Languages: eng Pagination: 94-107 Citation Subset: IM |
Affiliation:
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Department of Psychology, Villanova University, Villanova, PA 19085, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Behavior, Animal Conditioning, Operant / physiology* Cues* Male Rats Rats, Sprague-Dawley Reinforcement (Psychology)* Reinforcement Schedule Time Factors Time Perception* |
| Grant Support | |
ID/Acronym/Agency:
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R03 DA021702-01A1/DA/NIDA NIH HHS; R03 DA021702-02/DA/NIDA NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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