Paper Info
Title
Functional connectivity in obesity during reward processing.
Abstract
Obesity is a health problem that has become a major focus of attention in recent years. There is growing evidence of an association between obesity and differences in reward processing. However, it is not known at present whether these differences are linked exclusively to food, or whether they can be detected in other rewarding stimuli. We compared responses to food, rewarding non-food and neutral pictures in 18 young adults with obesity and 19 normal-weight subjects using independent component analysis. Both groups modulated task-related activity in a plausible way. However, in response to both food and non-food rewarding stimuli, participants with obesity showed weaker connectivity in a network involving activation of frontal and occipital areas and deactivation of the posterior part of the default mode network. In addition, obesity was related with weaker activation of the default mode network and deactivation of frontal and occipital areas while viewing neutral stimuli. Together, our findings suggest that obesity is related to a different allocation of cognitive resources in a fronto-occipital network and in the default mode network.
Year
DOI
Venue
2013
10.1016/j.neuroimage.2012.10.035
NeuroImage
Keywords
Field
DocType
Obesity,Reward,Connectivity,Functional magnetic resonance imaging
Developmental psychology,Cognitive resource theory,Default mode network,Functional magnetic resonance imaging,Cognitive psychology,Psychology,Young adult,Obesity,Stimulus (physiology)
Journal
Volume
ISSN
Citations 
66
1053-8119
2
PageRank 
References 
Authors
0.46
19
12
Name
Order
Citations
PageRank
I García-García140.88
María Angeles Jurado291.63
Maite Garolera3223.97
Barbara Segura461.35
I Marqués-Iturria520.46
R Pueyo640.87
M Vernet-Vernet720.46
M J Sender-Palacios840.88
R Sala-Llonch920.80
M Ariza1020.46
Ana Narberhaus11111.39
Carme Junque12162.31