Document Detail

Stimulus control and compounding with ambient odor as a discriminative stimulus on a free-operant baseline.
MedLine Citation:
PMID:  17465315     Owner:  NLM     Status:  MEDLINE    
Previous experiments have demonstrated that the simultaneous presentation of independently established discriminative stimuli can control rates of operant responding substantially higher than the rates occasioned by the individual stimuli. This "additive summation" phenomenon has been shown with a variety of different reinforcers (e.g., food, water, shock avoidance, cocaine, and heroin). Discriminative stimuli previously used in such studies have been limited to the visual and auditory sensory modalities. The present experiment sought to (1) establish stimulus control on a free-operant baseline with an ambient olfactory discriminative stimulus, (2) compare olfactory control to that produced with an auditory discriminative stimulus, and (3) determine whether compounding independently established olfactory and auditory discriminative stimuli produces additive summation. Rats lever pressed for food on a variable-interval schedule in the presence of either a tone or an odor, with comparable control developed to each stimulus. In the absence of these stimuli responding was not reinforced. During stimulus compounding tests, the tone-plus-odor compound occasioned more than double the responses occasioned by either the tone or odor presented individually. Thus, the current study (1) established stimulus control with an ambient olfactory discriminative stimulus in a traditional free-operant setting and (2) extended the generality of stimulus-compounding effects by demonstrating additive summation when olfactory and auditory discriminative stimuli were presented simultaneously.
Scott I Cohn; Stanley J Weiss
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  87     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-04-30     Completed Date:  2007-06-01     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  261-73     Citation Subset:  IM    
Department of Psychology, American University, Washington, DC 20016, USA.
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MeSH Terms
Conditioning, Operant*
Discrimination Learning*
Rats, Long-Evans
Grant Support

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

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