Different Decision-Making Responses Occupy Different Brain Networks for Information Processing: A Study Based on EEG and TMS

Document Type

Article

Publication Date

9-13-2019

Abstract

This study used large-scale time-varying network analysis to reveal the diverse network patterns during the different decision stages and found that the responses of rejection and acceptance involved different network structures. When participants accept unfair offers, the brain recruits a more bottom-up mechanism with a much stronger information flow from the visual cortex (O2) to the frontal area, but when they reject unfair offers, it displayed a more top-down flow derived from the frontal cortex (Fz) to the parietal and occipital cortices. Furthermore, we performed 2 additional studies to validate the above network models: one was to identify the 2 responses based on the out-degree information of network hub nodes, which results in 70% accuracy, and the other utilized theta burst stimulation (TBS) of transcranial magnetic stimulation (TMS) to modulate the frontal area before the decision-making tasks. We found that the intermittent TBS group demonstrated lower acceptance rates and that the continuous TBS group showed higher acceptance rates compared with the sham group. Similar effects were not observed after TBS of a control site. These results suggest that the revealed decision-making network model can serve as a potential intervention model to alter decision responses.

Identifier

85072038450 (Scopus)

Publication Title

Cerebral Cortex

External Full Text Location

https://doi.org/10.1093/cercor/bhy294

e-ISSN

14602199

ISSN

10473211

PubMed ID

30535319

First Page

4119

Last Page

4129

Issue

10

Volume

29

Grant

2017YFB1002501

Fund Ref

Sichuan Province Science and Technology Support Program

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