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Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making

Decision makers often follow other similarly situated people in making decisions, creating a sequential decision-making context. Although rational behavior is often to make the same choice as previous decision makers, which can result in an information cascade, people may assign inappropriately high...

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Autores principales: Niu, Xiaofei, Li, Jianbiao, Browne, Glenn J, Li, Dahui, Cao, Qian, Liu, Xiaoli, Wang, Guangrong, Wang, Pengcheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6318474/
https://www.ncbi.nlm.nih.gov/pubmed/30496572
http://dx.doi.org/10.1093/scan/nsy106
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author Niu, Xiaofei
Li, Jianbiao
Browne, Glenn J
Li, Dahui
Cao, Qian
Liu, Xiaoli
Wang, Guangrong
Wang, Pengcheng
author_facet Niu, Xiaofei
Li, Jianbiao
Browne, Glenn J
Li, Dahui
Cao, Qian
Liu, Xiaoli
Wang, Guangrong
Wang, Pengcheng
author_sort Niu, Xiaofei
collection PubMed
description Decision makers often follow other similarly situated people in making decisions, creating a sequential decision-making context. Although rational behavior is often to make the same choice as previous decision makers, which can result in an information cascade, people may assign inappropriately higher weight to their own private information and discount public information about predecessors’ choices. Recent findings suggest that overweighting private information may be associated with increased activities in the inferior frontal gyrus (IFG). In the present study, we employed transcranial direct current stimulation (tDCS) and developed a computational model to examine the causal relationship between right IFG (rIFG) and overweighting private information. Specifically, we applied three types of tDCS over rIFG while participants were completing a sequential decision-making task. Our results showed that anodal stimulation significantly increased the weight given to private information and decreased the response time in making a decision when private information conflicted with public information, but cathodal stimulation did not have such impacts. Importantly, the effect of anodal stimulation was significant in some conditions when information conflict or task difficulty reached a threshold that might trigger cognitive control-related processes. Our findings revealed the important role of rIFG in trade-off between considering private and public information during sequential decision-making.
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spelling pubmed-63184742019-01-07 Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making Niu, Xiaofei Li, Jianbiao Browne, Glenn J Li, Dahui Cao, Qian Liu, Xiaoli Wang, Guangrong Wang, Pengcheng Soc Cogn Affect Neurosci Original Article Decision makers often follow other similarly situated people in making decisions, creating a sequential decision-making context. Although rational behavior is often to make the same choice as previous decision makers, which can result in an information cascade, people may assign inappropriately higher weight to their own private information and discount public information about predecessors’ choices. Recent findings suggest that overweighting private information may be associated with increased activities in the inferior frontal gyrus (IFG). In the present study, we employed transcranial direct current stimulation (tDCS) and developed a computational model to examine the causal relationship between right IFG (rIFG) and overweighting private information. Specifically, we applied three types of tDCS over rIFG while participants were completing a sequential decision-making task. Our results showed that anodal stimulation significantly increased the weight given to private information and decreased the response time in making a decision when private information conflicted with public information, but cathodal stimulation did not have such impacts. Importantly, the effect of anodal stimulation was significant in some conditions when information conflict or task difficulty reached a threshold that might trigger cognitive control-related processes. Our findings revealed the important role of rIFG in trade-off between considering private and public information during sequential decision-making. Oxford University Press 2018-11-27 /pmc/articles/PMC6318474/ /pubmed/30496572 http://dx.doi.org/10.1093/scan/nsy106 Text en © The Author(s) 2018. Published by Oxford University Press. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Niu, Xiaofei
Li, Jianbiao
Browne, Glenn J
Li, Dahui
Cao, Qian
Liu, Xiaoli
Wang, Guangrong
Wang, Pengcheng
Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title_full Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title_fullStr Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title_full_unstemmed Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title_short Transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
title_sort transcranial stimulation over right inferior frontal gyrus increases the weight given to private information during sequential decision-making
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6318474/
https://www.ncbi.nlm.nih.gov/pubmed/30496572
http://dx.doi.org/10.1093/scan/nsy106
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