Document Detail

Changes in stimulus salience as a result of stimulus preexposure: evidence from aversive and appetitive testing procedures.
MedLine Citation:
PMID:  12882377     Owner:  NLM     Status:  MEDLINE    
In two experiments, rats received preexposure to three compound flavor stimuli, AX, BX, and CX, where X represents a saline solution. AX and BX were presented in alternation; CX, on a separate block of trials. The value of X was then modified, being devalued by aversive conditioning in Experiment 1, and rendered valuable by the induction of a state of salt need in Experiment 2. When given a choice between BX and CX, the rats consumed more of BX than of CX in Experiment 1, and more of CX than of BX in Experiment 2, suggesting that B and C differed in their ability to modulate the response governed by the X element. It was suggested that blocked preexposure to CX reduces the salience of the C stimulus but that the salience of B is maintained by preexposure in which BX is alternated with AX. The implications of this result for the phenomenon of perceptual learning are discussed.
C A J Blair; Geoffrey Hall
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Learning & behavior     Volume:  31     ISSN:  1543-4494     ISO Abbreviation:  Learn Behav     Publication Date:  2003 May 
Date Detail:
Created Date:  2003-07-28     Completed Date:  2003-09-10     Revised Date:  2011-01-24    
Medline Journal Info:
Nlm Unique ID:  101155056     Medline TA:  Learn Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  185-91     Citation Subset:  IM    
Department of Psychology, University of York, York, England.
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MeSH Terms
Appetitive Behavior*
Avoidance Learning*
Generalization, Stimulus
Inhibition (Psychology)
Perceptual Distortion*
Practice (Psychology)*
Rats, Inbred Strains
Reinforcement (Psychology)
Taste Threshold*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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