Document Detail


Verbal labels selectively bias brain responses to high-energy foods.
MedLine Citation:
PMID:  24185017     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The influence of external factors on food preferences and choices is poorly understood. Knowing which and how food-external cues impact the sensory processing and cognitive valuation of food would provide a strong benefit toward a more integrative understanding of food intake behavior and potential means of interfering with deviant eating patterns to avoid detrimental health consequences for individuals on the long run. We investigated whether written labels with positive and negative (as opposed to 'neutral') valence differentially modulate the spatio-temporal brain dynamics in response to the subsequent viewing of high- and low-energetic food images. Electrical neuroimaging analyses were applied to visual evoked potentials (VEPs) from 20 normal-weight participants. VEPs and source estimations in response to high- and low- energy foods were differentially affected by the valence of preceding word labels over the ~260-300ms post-stimulus period. These effects were only observed when high-energy foods were preceded by labels with positive valence. Neural sources in occipital, as well as posterior frontal, insular and cingulate regions were down-regulated. These findings favor implicit cognitive-affective influences especially on the visual responses to high-energetic food cues, potentially indicating decreases in cognitive control and goal-adaptive behavior. Inverse correlations between insular activity and effectiveness in food classification further indicate that this down-regulation directly impacts food-related behavior.
Authors:
Ulrike Toepel; Kathrin Ohla; Julie Hudry; Johannes le Coutre; Micah M Murray
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-31
Journal Detail:
Title:  NeuroImage     Volume:  -     ISSN:  1095-9572     ISO Abbreviation:  Neuroimage     Publication Date:  2013 Oct 
Date Detail:
Created Date:  2013-11-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9215515     Medline TA:  Neuroimage     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013.
Affiliation:
The Functional Electrical Neuroimaging Laboratory, Department of Clinical Neurosciences and Department of Radiology, Vaudois University Hospital Center and University of Lausanne, Switzerland. Electronic address: Ulrike.Toepel@chuv.ch.
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