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Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study

Fairness is a hallmark of humans' ability to maintain cooperative relationships with large numbers of unrelated others. It influences many aspects of daily life, from how people share their resources with partners to how policymakers shape income distribution policy. The right temporoparietal j...

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Autores principales: Wu, Shijing, Cai, Shenggang, Dong, Zhiqiang, Zhang, Hanqi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9892459/
https://www.ncbi.nlm.nih.gov/pubmed/36744103
http://dx.doi.org/10.3389/fnbeh.2022.1047593
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author Wu, Shijing
Cai, Shenggang
Dong, Zhiqiang
Zhang, Hanqi
author_facet Wu, Shijing
Cai, Shenggang
Dong, Zhiqiang
Zhang, Hanqi
author_sort Wu, Shijing
collection PubMed
description Fairness is a hallmark of humans' ability to maintain cooperative relationships with large numbers of unrelated others. It influences many aspects of daily life, from how people share their resources with partners to how policymakers shape income distribution policy. The right temporoparietal junction (rTPJ) is a hub of the mentalizing network and it has been proposed to play a key role in guiding human reciprocal behavior; however, its precise functional contribution to fair behavior in situations of advantageous and disadvantageous inequity remains unclear. The purpose of this study was to clarify the role of the rTPJ in relation to fair behavior in situations of advantageous and disadvantageous inequity by modulating the activation of the rTPJ through transcranial direct current stimulation (tDCS). Anodal tDCS at 1.5 mA over the primary visual cortex (VC) or rTPJ was performed and participants subsequently played a binary-choice version of the Dictator Game. We found that anodal tDCS over the rTPJ increased the participants' equity choices in the disadvantageous inequity situation but not in the advantageous inequity situation. The tDCS effect is moderated by sex and, in particular, the tDCS effect increases female equity choices. The results suggest that the rTPJ plays a distinct role in inequity aversion in these two types of inequity situations.
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spelling pubmed-98924592023-02-03 Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study Wu, Shijing Cai, Shenggang Dong, Zhiqiang Zhang, Hanqi Front Behav Neurosci Behavioral Neuroscience Fairness is a hallmark of humans' ability to maintain cooperative relationships with large numbers of unrelated others. It influences many aspects of daily life, from how people share their resources with partners to how policymakers shape income distribution policy. The right temporoparietal junction (rTPJ) is a hub of the mentalizing network and it has been proposed to play a key role in guiding human reciprocal behavior; however, its precise functional contribution to fair behavior in situations of advantageous and disadvantageous inequity remains unclear. The purpose of this study was to clarify the role of the rTPJ in relation to fair behavior in situations of advantageous and disadvantageous inequity by modulating the activation of the rTPJ through transcranial direct current stimulation (tDCS). Anodal tDCS at 1.5 mA over the primary visual cortex (VC) or rTPJ was performed and participants subsequently played a binary-choice version of the Dictator Game. We found that anodal tDCS over the rTPJ increased the participants' equity choices in the disadvantageous inequity situation but not in the advantageous inequity situation. The tDCS effect is moderated by sex and, in particular, the tDCS effect increases female equity choices. The results suggest that the rTPJ plays a distinct role in inequity aversion in these two types of inequity situations. Frontiers Media S.A. 2023-01-19 /pmc/articles/PMC9892459/ /pubmed/36744103 http://dx.doi.org/10.3389/fnbeh.2022.1047593 Text en Copyright © 2023 Wu, Cai, Dong and Zhang. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Behavioral Neuroscience
Wu, Shijing
Cai, Shenggang
Dong, Zhiqiang
Zhang, Hanqi
Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title_full Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title_fullStr Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title_full_unstemmed Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title_short Distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: A tDCS study
title_sort distinct role of the right temporoparietal junction in advantageous and disadvantageous inequity: a tdcs study
topic Behavioral Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9892459/
https://www.ncbi.nlm.nih.gov/pubmed/36744103
http://dx.doi.org/10.3389/fnbeh.2022.1047593
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