Alpha oscillations and event related potentials reflect distinct dynamics of attribute construction and evidence accumulation in dietary decision making
- University of Toronto, Canada
- University of Toronto Scarborough, Canada
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.
Data availability
Raw data are deposited on Open Science Framework, under the project DOI: 10.17605/OSF.IO/EWTVX .Raw Behavioural data: https://osf.io/yp2x9Raw EEG data: https://osf.io/p5wd2
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EEG Dynamics of Self-Regulatory Strategies in Dietary Decision Making: EEG dataOpen Science Framework, p5wd2.
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EEG Dynamics of Self-Regulatory Strategies in Dietary Decision Making: Behavioural dataOpen Science Framework, yp2x9.
Article and author information
Author details
Azadeh HajiHosseini
Cendri A Hutcherson
Funding
Natural Sciences and Engineering Research Council of Canada (RGPIN-2016-06541)
- Cendri A Hutcherson
Canada Research Chairs
- Cendri A Hutcherson
Connaught Fund
- Cendri A Hutcherson
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Human subjects: All subjects gave written consent for data collection and publication prior to the experiment. The study was approved by the Research Ethics Board of the University of Toronto (Protocol #34322).
Copyright
© 2021, HajiHosseini & Hutcherson
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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Alpha oscillations and event related potentials reflect distinct dynamics of attribute construction and evidence accumulation in dietary decision making
eLife 10:e60874.
https://doi.org/10.7554/eLife.60874
