| Contextual modulation of stimulus generalization in rats. | |
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MedLine Citation:
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PMID: 19839703 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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One connectionist analysis of the acquired equivalence/distinctiveness of cues assumes that when similar compounds (e.g., AX and BX) are paired with the same outcome (e.g., food, +; or no food, -), their components come to activate the same configural unit (ABX). When these compounds are paired with different outcomes, their components will come to address different units. Here, rats received appetitive training with eight compounds (e.g., AX+, BX+, CX-, DX-, AY+, BY-, CY-, DY+) that should generate the following configural units: ABX, CDX, ADY, and BCY. In Experiment 1, rats then received aversive conditioning to A, which should activate and revalue representations ABX and ADY. Subsequently, compounds that provided dual activation (i.e., BX and DY) of one of the revalued configural units (ABX and ADY) were shown to elicit greater fear than those compounds that provided a single source of activation to each unit (i.e., DX and BY). Experiment 2 confirmed and extended these findings. These results provide support for the connectionist analysis outlined above and are consistent with the application of this approach to the acquired equivalence/distinctiveness of cues. |
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Authors:
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James Close; Ulrike Hahn; R C Honey |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of experimental psychology. Animal behavior processes Volume: 35 ISSN: 1939-2184 ISO Abbreviation: J Exp Psychol Anim Behav Process Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-10-20 Completed Date: 2010-01-05 Revised Date: - |
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: 509-15 Citation Subset: IM |
Copyright Information:
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PsycINFO Database Record (c) 2009 APA, all rights reserved |
Affiliation:
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School of Psychology, Cardiff University, Cardiff, United Kingdom. closejoe@cardiff.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Animals Appetitive Behavior / physiology Association Learning / physiology* Behavior, Animal / physiology* Conditioning, Operant / physiology Cues* Discrimination Learning / physiology* Generalization, Stimulus / physiology* Male Pattern Recognition, Visual Photic Stimulation Rats |
| Grant Support | |
ID/Acronym/Agency:
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//Biotechnology and Biological Sciences Research Council |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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