Document Detail


Greater effort boosts the affective taste properties of food.
MedLine Citation:
PMID:  21047860     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Actions can create preferences, increasing the value ascribed to commodities acquired at greater cost. This behavioural finding has been observed in a variety of species; however, the causal factors underlying the phenomenon are relatively unknown. We sought to develop a behavioural platform to examine the relationship between effort and reinforcer value in mice trained under demanding or lenient schedules of reinforcement to obtain food. In the initial experiment, expenditure of effort enhanced the value of the associated food via relatively lasting changes in its hedonic attributes, promoting an acquired preference for these reinforcers when tested outside of the training environment. Moreover, otherwise neutral cues associated with those reinforcers during training similarly acquired greater reinforcing value, as assessed under conditioned reinforcement. In a separate experiment, expenditure of effort was also capable of enhancing the value of less-preferred low-caloric reinforcers. Analysis of licking microstructure revealed the basis for this increased valuation was, in part, due to increased palatability of the associated reinforcer. This change in the hedonic taste properties of the food can not only serve as a basis for preference, but also guide decision-making and foraging behaviour by coordinating a potentially adaptive repertoire of incentive motivation, goal-directed action and consumption.
Authors:
Alexander W Johnson; Michela Gallagher
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2010-11-03
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  278     ISSN:  1471-2954     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-04-07     Completed Date:  2011-08-03     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1450-6     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Conditioning, Classical
Food*
Food Preferences / psychology*
Male
Mice
Mice, Inbred C57BL
Physical Exertion
Reinforcement (Psychology)
Reward
Taste*
Grant Support
ID/Acronym/Agency:
DK084415/DK/NIDDK NIH HHS; MH60179/MH/NIMH NIH HHS; MH84018/MH/NIMH NIH HHS
Comments/Corrections

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


Previous Document:  Measuring social networks in British primary schools through scientific engagement.
Next Document:  Fork-tailed drongos use deceptive mimicked alarm calls to steal food.