Gender and weight shape brain dynamics during food viewing.

Hemodynamic imaging results have associated both gender and body weight to variation in brain responses to food-related information. However, the spatio-temporal brain dynamics of gender-related and weight-wise modulations in food discrimination still remain to be elucidated. We analyzed visual evok...

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Autores principales:	Ulrike Toepel, Jean-François Knebel, Julie Hudry, Johannes le Coutre, Micah M Murray
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/570a8c4b4ce1466c8d6cf1b76f0ce320
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spelling	oai:doaj.org-article:570a8c4b4ce1466c8d6cf1b76f0ce3202021-11-18T07:19:10ZGender and weight shape brain dynamics during food viewing.1932-620310.1371/journal.pone.0036778https://doaj.org/article/570a8c4b4ce1466c8d6cf1b76f0ce3202012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22590605/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Hemodynamic imaging results have associated both gender and body weight to variation in brain responses to food-related information. However, the spatio-temporal brain dynamics of gender-related and weight-wise modulations in food discrimination still remain to be elucidated. We analyzed visual evoked potentials (VEPs) while normal-weighted men (n = 12) and women (n = 12) categorized photographs of energy-dense foods and non-food kitchen utensils. VEP analyses showed that food categorization is influenced by gender as early as 170 ms after image onset. Moreover, the female VEP pattern to food categorization co-varied with participants' body weight. Estimations of the neural generator activity over the time interval of VEP modulations (i.e. by means of a distributed linear inverse solution [LAURA]) revealed alterations in prefrontal and temporo-parietal source activity as a function of image category and participants' gender. However, only neural source activity for female responses during food viewing was negatively correlated with body-mass index (BMI) over the respective time interval. Women showed decreased neural source activity particularly in ventral prefrontal brain regions when viewing food, but not non-food objects, while no such associations were apparent in male responses to food and non-food viewing. Our study thus indicates that gender influences are already apparent during initial stages of food-related object categorization, with small variations in body weight modulating electrophysiological responses especially in women and in brain areas implicated in food reward valuation and intake control. These findings extend recent reports on prefrontal reward and control circuit responsiveness to food cues and the potential role of this reactivity pattern in the susceptibility to weight gain.Ulrike ToepelJean-François KnebelJulie HudryJohannes le CoutreMicah M MurrayPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e36778 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ulrike Toepel Jean-François Knebel Julie Hudry Johannes le Coutre Micah M Murray Gender and weight shape brain dynamics during food viewing.
description	Hemodynamic imaging results have associated both gender and body weight to variation in brain responses to food-related information. However, the spatio-temporal brain dynamics of gender-related and weight-wise modulations in food discrimination still remain to be elucidated. We analyzed visual evoked potentials (VEPs) while normal-weighted men (n = 12) and women (n = 12) categorized photographs of energy-dense foods and non-food kitchen utensils. VEP analyses showed that food categorization is influenced by gender as early as 170 ms after image onset. Moreover, the female VEP pattern to food categorization co-varied with participants' body weight. Estimations of the neural generator activity over the time interval of VEP modulations (i.e. by means of a distributed linear inverse solution [LAURA]) revealed alterations in prefrontal and temporo-parietal source activity as a function of image category and participants' gender. However, only neural source activity for female responses during food viewing was negatively correlated with body-mass index (BMI) over the respective time interval. Women showed decreased neural source activity particularly in ventral prefrontal brain regions when viewing food, but not non-food objects, while no such associations were apparent in male responses to food and non-food viewing. Our study thus indicates that gender influences are already apparent during initial stages of food-related object categorization, with small variations in body weight modulating electrophysiological responses especially in women and in brain areas implicated in food reward valuation and intake control. These findings extend recent reports on prefrontal reward and control circuit responsiveness to food cues and the potential role of this reactivity pattern in the susceptibility to weight gain.
format	article
author	Ulrike Toepel Jean-François Knebel Julie Hudry Johannes le Coutre Micah M Murray
author_facet	Ulrike Toepel Jean-François Knebel Julie Hudry Johannes le Coutre Micah M Murray
author_sort	Ulrike Toepel
title	Gender and weight shape brain dynamics during food viewing.
title_short	Gender and weight shape brain dynamics during food viewing.
title_full	Gender and weight shape brain dynamics during food viewing.
title_fullStr	Gender and weight shape brain dynamics during food viewing.
title_full_unstemmed	Gender and weight shape brain dynamics during food viewing.
title_sort	gender and weight shape brain dynamics during food viewing.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/570a8c4b4ce1466c8d6cf1b76f0ce320
work_keys_str_mv	AT ulriketoepel genderandweightshapebraindynamicsduringfoodviewing AT jeanfrancoisknebel genderandweightshapebraindynamicsduringfoodviewing AT juliehudry genderandweightshapebraindynamicsduringfoodviewing AT johanneslecoutre genderandweightshapebraindynamicsduringfoodviewing AT micahmmurray genderandweightshapebraindynamicsduringfoodviewing
_version_	1718423596710232064

Gender and weight shape brain dynamics during food viewing.

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