Functional network connectivity underlying food processing: disturbed salience and visual processing in overweight and obese adults

Cerebral Cortex
Stephanie KullmannRalf Veit

Abstract

In order to adequately explore the neurobiological basis of eating behavior of humans and their changes with body weight, interactions between brain areas or networks need to be investigated. In the current functional magnetic resonance imaging study, we examined the modulating effects of stimulus category (food vs. nonfood), caloric content of food, and body weight on the time course and functional connectivity of 5 brain networks by means of independent component analysis in healthy lean and overweight/obese adults. These functional networks included motor sensory, default-mode, extrastriate visual, temporal visual association, and salience networks. We found an extensive modulation elicited by food stimuli in the 2 visual and salience networks, with a dissociable pattern in the time course and functional connectivity between lean and overweight/obese subjects. Specifically, only in lean subjects, the temporal visual association network was modulated by the stimulus category and the salience network by caloric content, whereas overweight and obese subjects showed a generalized augmented response in the salience network. Furthermore, overweight/obese subjects showed changes in functional connectivity in networks important for ...Continue Reading

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Citations

Oct 30, 2013·International Journal of Obesity : Journal of the International Association for the Study of Obesity·M KulendranA Darzi
Oct 16, 2015·NeuroImage·Stephanie KullmannHubert Preissl
Oct 10, 2015·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Sabine FrankHubert Preissl
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Jun 18, 2014·Frontiers in Psychology·Kristina L McFaddenJason R Tregellas
Jun 18, 2014·NeuroImage. Clinical·Stephanie KullmannHubert Preissl
May 21, 2016·International Journal of Obesity : Journal of the International Association for the Study of Obesity·Y ZhangG-J Wang
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Nov 20, 2019·International Journal of Obesity : Journal of the International Association for the Study of Obesity·Liya KeremFranziska Plessow
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Feb 16, 2017·Frontiers in Psychology·Bin ZhangJijun Wang

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