Alpha oscillations and event related potentials reflect distinct dynamics of attribute construction and evidence accumulation in dietary decision making release_moatfwuaenh5dd4ieek3e2ghfi

by Azadeh HajiHosseini, Cendri Hutcherson

Published in eLife by eLife Sciences Publications, Ltd.

2021   Volume 10

Abstract

How does regulatory focus alter attribute value construction (AVC) and evidence accumulation (EA)? We recorded EEG during food choices while participants responded naturally or regulated their choices by attending to health attributes or decreasing attention to taste attributes. Using a drift diffusion model, we predicted the time course of neural signals associated with AVC and EA. Results suggested that event-related-potentials (ERPs) correlated with the time course of model-predicted taste-attribute signals, with no modulation by regulation. By contrast, suppression of frontal and occipital alpha power correlated with the time course of EA, tracked tastiness according to its goal relevance, and predicted individual variation in successful down-regulation of tastiness. Additionally, an earlier rise in frontal and occipital theta power represented food tastiness more strongly during regulation, and predicted a weaker influence of food tastiness on behaviour. Our findings illuminate how regulation modifies the representation of attributes during the process of evidence accumulation.
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Type  article-journal
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Date   2021-07-15
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DOI  10.7554/elife.60874
PubMed  34263723
PMC  PMC8318586
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ISSN-L:  2050-084X
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