Posterior resting states EEG asymmetries are associated with hedonic valuation of food

Publication date: Available online 10 October 2016
Source:International Journal of Psychophysiology
Author(s): Marlies E. van Bochove, Eva Ketel, Miles Wischnewski, Joost Wegman, Esther Aarts, Benjamin de Jonge, W. Pieter Medendorp, Dennis J.L.G. Schutter
Research on the hedonic value of food has been important in understanding the motivational and emotional correlates of normal and abnormal eating behaviour. The aim of the present study was to explore associations between hemispheric asymmetries recorded during resting state electroencephalography (EEG) and hedonic valuation of food. Healthy adult volunteers were recruited and four minutes of resting state EEG were recorded from the scalp. Hedonic food valuation and reward sensitivity were assessed with the hedonic attitude to food and behavioural activation scale. Results showed that parieto-occipital resting state EEG asymmetries in the alpha (8–12Hz) and beta (13–30Hz) frequency range correlate with the hedonic valuation of food. Our finding suggests that self-reported sensory-related attitude towards food is associated with interhemispheric asymmetries in resting state oscillatory activity. Our findings contribute to understanding the electrophysiological correlates of hedonic valuation, and may provide an opportunity to modulate the cortical imbalance by using non-invasive brain stimulation methods to change food consumption.



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