Loading...

Gustatory cortex is involved in evidence accumulation during food choice

Ataei, A ; Sharif University of Technology | 2022

100 Viewed
  1. Type of Document: Article
  2. DOI: 10.1523/ENEURO.0006-22.2022
  3. Publisher: Society for Neuroscience , 2022
  4. Abstract:
  5. Food choice is one of the most fundamental and most frequent value-based decisions for all animals including humans. However, the neural circuitry involved in food-based decisions is only recently being addressed. Given the relatively fast dynamics of decision formation, electroencephalography (EEG)-informed fMRI analysis is highly beneficial for localizing this circuitry in humans. Here, by using the EEG correlates of evidence accumulation in a simultaneously recorded EEG-fMRI dataset, we found a significant role for the right temporal-parietal operculum (PO) and medial insula including gustatory cortex (GC) in binary choice between food items. These activations were uncovered by using the “EEG energy” (power 2 of EEG) as the BOLD regressor and were missed if conventional analysis with the EEG signal itself were to be used, in agreement with theoretical predictions for EEG and BOLD relations. No significant positive correlations were found with higher powers of EEG (powers 3 or 4) pointing to specificity and sufficiency of EEG energy as the main correlate of the BOLD response. This finding extends the role of cortical areas traditionally involved in palatability processing to value-based decision-making and offers the “EEG energy” as a key regressor of BOLD response in simultaneous EEG-fMRI designs. © 2022 Ataei et al
  6. Keywords:
  7. EEG energy ; EEG-informed fMRI analysis ; Food choice ; Gustatory cortex ; Value-based decision-making ; BOLD signal ; Brain cortex ; Decision making ; Functional magnetic resonance imaging ; Human ; Insula ; Palatability ; Parietal operculum ; Prediction ; Brain mapping ; Food preference ; Nuclear magnetic resonance imaging ; Physiology ; Brain ; Electroencephalography ; Food Preferences ; Insular Cortex ; Magnetic Resonance Imaging
  8. Source: eNeuro ; Volume 9, Issue 3 , 2022 ; 23732822 (ISSN)
  9. URL: https://pubmed.ncbi.nlm.nih.gov/35508371