Document Detail

Effect of upcoming reward type when rats press a lever for ethanol.
MedLine Citation:
PMID:  15088869     Owner:  NLM     Status:  MEDLINE    
Rats' operant responding for sucrose rewards in the 1st half of a session can vary directly with the conditions of reward in the 2nd half. The authors investigated whether that induction effect represented an animal model of emotive states. Rats pressed a lever for either ethanol or sucrose rewards in the 1st half of a 40-min session. The reward in the 2nd half of the session was, across conditions, 1% sucrose, a food pellet, or the same reinforcer delivered in the 1st half. When subjects responded for sucrose, upcoming reward type had little influence on responding in the 1st half of the session. However, when subjects responded for ethanol, upcoming 1% sucrose and food-pellet reinforcement both produced increases in responding. The results suggest that the procedure produced different emotive states, but further work is needed to support such a model. The results also have potential applied implications.
Jeffrey N Weatherly; Kelly L Bishop; Dana M Borowiak
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of general psychology     Volume:  131     ISSN:  0022-1309     ISO Abbreviation:  J Gen Psychol     Publication Date:  2004 Apr 
Date Detail:
Created Date:  2004-04-19     Completed Date:  2004-06-17     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  2985111R     Medline TA:  J Gen Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  181-92     Citation Subset:  IM    
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MeSH Terms
Behavior, Animal
Central Nervous System Stimulants / administration & dosage*
Ethanol / administration & dosage*
Psychomotor Performance / drug effects*
Random Allocation
Rats, Sprague-Dawley
Reinforcement (Psychology)
Reg. No./Substance:
0/Central Nervous System Stimulants; 3K9958V90M/Ethanol

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

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