| Brain activation in restrained and unrestrained eaters: an fMRI study. | |
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MedLine Citation:
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PMID: 19685956 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Maria Coletta; Steven Platek; Feroze B Mohamed; J Jason van Steenburgh; Deborah Green; Michael R Lowe |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of abnormal psychology Volume: 118 ISSN: 1939-1846 ISO Abbreviation: J Abnorm Psychol Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-08-18 Completed Date: 2009-11-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0034461 Medline TA: J Abnorm Psychol Country: United States |
Other Details:
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Languages: eng Pagination: 598-609 Citation Subset: IM |
Affiliation:
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Department of Psychology, Drexel University, Philadelphia, PA 19102, USA. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Appetite
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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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