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  Hemispheric asymmetries in resting-state EEG and fMRI are related to approach and avoidance behaviour, but not to eating behaviour or BMI

Morys, F., Janssen, L., Cesnaite, E., Beyer, F., Garcia-Garcia, I., Kube, J., et al. (2019). Hemispheric asymmetries in resting-state EEG and fMRI are related to approach and avoidance behaviour, but not to eating behaviour or BMI. bioRxiv. doi:10.1101/692012.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-BA3A-A Version Permalink: http://hdl.handle.net/21.11116/0000-0004-BA3B-9
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Morys, Filip1, 2, Author              
Janssen, Lieneke1, 2, Author              
Cesnaite, Elena1, Author              
Beyer, Frauke1, Author              
Garcia-Garcia, Isabel 2, Author
Kube, Jana1, 2, Author              
Kumral, Deniz1, 2, Author              
Liem, Franz2, 3, Author              
Mehl, Nora1, 2, Author              
Mahjoory, Keyvan1, 2, Author              
Schrimpf, Anne1, Author              
Gaebler, Michael1, 2, Author              
Margulies, Daniel S.1, 2, 3, Author              
Villringer, Arno1, 2, Author              
Neumann, Jane1, 2, Author              
Nikulin, Vadim V.1, 2, Author              
Horstmann, Annette1, 2, Author              
Affiliations:
1Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
2External Organizations, ou_persistent22              
3Max Planck Research Group Neuroanatomy and Connectivity, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_1356546              

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 Abstract: Much of our behaviour is driven by two motivational dimensions – approach and avoidance. These have been related to frontal hemispheric asymmetries in clinical and resting-state EEG studies: approach was linked to higher activity of the left relative to the right hemisphere, while avoidance was related to the opposite pattern. Increased approach behaviour, specifically towards unhealthy foods, is also observed in obesity and has been linked to asymmetry in the framework of the right-brain hypothesis of obesity. Here, we aimed to replicate previous EEG findings of hemispheric asymmetries for self-reported approach/avoidance behaviour and to relate them to eating behaviour. Further, we assessed whether resting fMRI hemispheric asymmetries can be detected and whether they are related to approach/avoidance, eating behaviour, and BMI. We analysed 3 samples: Sample 1 (n=117) containing EEG and fMRI data from lean participants, and Samples 2 (n=89) and 3 (n=152) containing fMRI data from lean, overweight, and obese participants. While in Sample 1 approach in women was related to EEG and fMRI hemispheric asymmetries, in Samples 2 and 3 this effect was not significant. Here, hemispheric asymmetries were neither related to BMI nor eating behaviour. Our study partly replicates previous EEG findings regarding hemispheric asymmetries and indicates that this relationship could also be captured using fMRI. Our findings suggest that eating behaviour and obesity are likely to be mediated by mechanisms not directly relating to frontal asymmetries in neuronal activation quantified with EEG and fMRI.

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Language(s): eng - English
 Dates: 2019-07-09
 Publication Status: Published online
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 Rev. Method: No review
 Identifiers: DOI: 10.1101/692012
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Title: bioRxiv
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