Document Detail


Self-regulatory depletion enhances neural responses to rewards and impairs top-down control.
MedLine Citation:
PMID:  24026225     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To be successful at self-regulation, individuals must be able to resist impulses and desires. The strength model of self-regulation suggests that when self-regulatory capacity is depleted, self-control deficits result from a failure to engage top-down control mechanisms. Using functional neuroimaging, we examined changes in brain activity in response to viewing desirable foods among 31 chronic dieters, half of whom completed a task known to result in self-regulatory depletion. Compared with nondepleted dieters, depleted dieters exhibited greater food-cue-related activity in the orbitofrontal cortex, a brain area associated with coding the reward value and liking aspects of desirable foods; they also showed decreased functional connectivity between this area and the inferior frontal gyrus, a region commonly implicated in self-control. These findings suggest that self-regulatory depletion provokes self-control failure by reducing connectivity between brain regions that are involved in cognitive control and those that represent rewards, thereby decreasing the capacity to resist temptations.
Authors:
Dylan D Wagner; Myra Altman; Rebecca G Boswell; William M Kelley; Todd F Heatherton
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2013-09-11
Journal Detail:
Title:  Psychological science     Volume:  24     ISSN:  1467-9280     ISO Abbreviation:  Psychol Sci     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-11-11     Completed Date:  2014-08-26     Revised Date:  2014-09-27    
Medline Journal Info:
Nlm Unique ID:  9007542     Medline TA:  Psychol Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2262-71     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Executive Function / physiology*
Female
Functional Neuroimaging / instrumentation,  methods
Humans
Magnetic Resonance Imaging
Prefrontal Cortex / physiology*
Reward*
Young Adult
Grant Support
ID/Acronym/Agency:
R01 DA022582/DA/NIDA NIH HHS; R01DA022582/DA/NIDA NIH HHS; R21 HL114092/HL/NHLBI NIH HHS; R21HL114092/HL/NHLBI NIH HHS; T32 HL007456/HL/NHLBI NIH HHS
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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