| Differences in attention to food and food intake between overweight/obese and normal-weight females under conditions of hunger and satiety. | |
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MedLine Citation:
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PMID: 19922752 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Starting from an addiction model of obesity, the present study examined differences in attention for food-related stimuli and food intake between overweight/obese and normal-weight women under conditions of hunger and satiety. Twenty-six overweight/obese (BMI: 30.00+/-4.62) and 40 normal-weight (BMI: 20.63+/-1.14) females were randomly assigned to a condition of hunger or satiety. Three indexes of attention were employed, all including pictures of food items: an eye-tracking paradigm (gaze direction and duration), a visual probe task (reaction times), and a recording of electrophysiological brain activity (amplitude of the P300 event-related potential). In addition, the acute food intake of participants was assessed using a bogus taste task. In general, an attentional bias towards food pictures was found in all participants. No differences between groups or conditions were observed in the eye-tracking data. The visual probe task revealed an enhanced automatic orientation towards food cues in hungry versus satiated, and in overweight/obese versus normal-weight individuals, but no differences between groups or conditions in maintained attention. The P300 amplitude showed that only in normal-weight participants the intentional allocation of attention to food pictures was enhanced in hunger versus satiety. In hungry overweight/obese participants, the P300 bias for food pictures was not clearly present, although an increased food intake was observed especially in this group. In conclusion, various attention-related tasks yielded various results, suggesting that they measure different underlying processes. Strikingly, overweight/obese individuals appear to automatically direct their attention to food-related stimuli, to a greater extent than normal-weight individuals, particularly when food-deprived. Speculatively, hungry overweight/obese individuals also appear to use cognitive strategies to reduce a maintained attentional bias for food stimuli, perhaps in an attempt to prevent disinhibited food intake. However, in order to draw firm conclusions, replication studies are needed. |
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Authors:
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Ilse M T Nijs; Peter Muris; Anja S Euser; Ingmar H A Franken |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial Date: 2009-11-14 |
Journal Detail:
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Title: Appetite Volume: 54 ISSN: 1095-8304 ISO Abbreviation: Appetite Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-01 Completed Date: 2010-05-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8006808 Medline TA: Appetite Country: England |
Other Details:
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Languages: eng Pagination: 243-54 Citation Subset: IM |
Copyright Information:
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Copyright 2009 Elsevier Ltd. All rights reserved. |
Affiliation:
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Institute of Psychology, Erasmus University Rotterdam, The Netherlands. nijs@fsw.eur.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Attention Cues Eating / psychology* Evoked Potentials / physiology Female Food Deprivation / physiology* Humans Hunger / physiology* Obesity / physiopathology, psychology Overweight / physiopathology, psychology* Photic Stimulation Questionnaires Satiation / physiology* Thinness / psychology Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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