Document Detail


Brain activation in restrained and unrestrained eaters: an fMRI study.
MedLine Citation:
PMID:  19685956     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Restraint theory has been used to model the process that produces binge eating. However, there is no satisfactory explanation for the tendency of restrained eaters (REs) to engage in counterregulatory eating, an ostensible analogue of binge eating. Using functional magnetic resonance imaging (fMRI), the authors investigated brain activation of normal weight REs (N = 9) and unrestrained eaters (UREs; N = 10) when fasted and fed and viewing pictures of highly and moderately palatable foods and neutral objects. When fasted and viewing highly palatable foods, UREs showed widespread bilateral activation in areas associated with hunger and motivation, whereas REs showed activation only in the cerebellum, an area previously implicated in low-level processing of appetitive stimuli. When fed and viewing high palatability foods, UREs showed activation in areas related to satiation and memory, whereas REs showed activation in areas implicated in desire, expectation of reward, and goal-defined behavior. These findings parallel those from behavioral research. The authors propose that the counterintuitive findings from preload studies and the present study are due to the fact that REs are less hungry than UREs when fasted and find palatable food more appealing than UREs when fed.
Authors:
Maria Coletta; Steven Platek; Feroze B Mohamed; J Jason van Steenburgh; Deborah Green; Michael R Lowe
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of abnormal psychology     Volume:  118     ISSN:  1939-1846     ISO Abbreviation:  J Abnorm Psychol     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-08-18     Completed Date:  2009-11-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0034461     Medline TA:  J Abnorm Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  598-609     Citation Subset:  IM    
Affiliation:
Department of Psychology, Drexel University, Philadelphia, PA 19102, USA.
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MeSH Terms
Descriptor/Qualifier:
Appetite / physiology
Brain / physiopathology*
Brain Mapping
Bulimia / diagnosis,  physiopathology*,  psychology
Diet, Reducing / psychology*
Dominance, Cerebral / physiology
Drive
Fasting / physiology
Feeding Behavior / physiology*
Food Preferences / physiology
Goals
Humans
Hunger / physiology
Image Processing, Computer-Assisted*
Magnetic Resonance Imaging*
Motivation
Nerve Net / physiopathology
Satiety Response / physiology
Taste / physiology

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


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