Increased neural activity of right temporo-parietal junction causes different effect on altruism in situations of advantageous and disadvantageous inequity

IF 2.2 3区心理学 Q3 NEUROSCIENCES

Brain and Cognition Pub Date : 2023-10-01 DOI:10.1016/j.bandc.2023.106061

Shijing Wu, Shenggang Cai, Yingxiao Li, Guanxing Xiong, Hanqi Zhang

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引用次数: 0

Abstract

Altruism is defined as the performance of “costly acts that confer economic benefits on other individuals”, which is one of the major puzzles in the behavioural sciences today. Altruistic behaviour not only facilitates interpersonal adaptation and harmony but also enhances social welfare and social responsibility. The right temporo-parietal junction (rTPJ) has been proposed as playing a key role in guiding human altruistic behaviour, but its precise functional contribution to altruistic behaviour in situations of advantageous and disadvantageous inequity remains unclear. The purpose of this study was to modulate the activation of the rTPJ through transcranial direct current stimulation (tDCS) in order to clarify the causal role of the rTPJ in altruistic behaviour in situations of advantageous and disadvantageous inequity. A total of 106 participants were randomly assigned to one of three stimulation conditions: anodal tDCS stimulation on the rTPJ; sham tDCS stimulation on the rTPJ and anodal tDCS stimulation on the primary visual cortex (VC)as the control group, and. After 20 min of stimulation, participants undertook a modified dictator game that measured altruistic behaviour. Mixed-effect logistic regressions were applied to statistical analyses in this study. The results indicated that anodal tDCS over the rTPJ increased participants’ altruistic tendency by increasing their tendency to choose altruistic options in trials with higher cost, as well as their tendency to behave altruistically in situations of advantageous but not disadvantageous inequity. These results suggested that increased neural activity of the rTPJ leads to different impacts on altruism in these two different inequity situations.

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在有利和不利的不公平情况下，右颞顶叶交界处神经活动的增加对利他主义产生不同的影响。

利他主义被定义为“为他人带来经济利益的代价高昂的行为”，这是当今行为科学的主要难题之一。利他主义行为不仅有助于人际适应和和谐，还可以提高社会福利和社会责任。右颞顶叶交界处（rPJ）被认为在引导人类利他行为中发挥着关键作用，但在有利和不利的不平等情况下，其对利他行为的确切功能贡献尚不清楚。本研究的目的是通过经颅直流电刺激（tDCS）调节rTPJ的激活，以阐明rTPJ在有利和不利不公平情况下的利他主义行为中的因果作用。共有106名参与者被随机分配到三种刺激条件之一：rTPJ上的阳极tDCS刺激；rTPJ上的假tDCS刺激和初级视觉皮层（VC）上的阳极tDCS刺激作为对照组。在20分钟的刺激后，参与者进行了一个改良的独裁者游戏，测量利他主义行为。本研究将混合效应逻辑回归应用于统计分析。结果表明，与rTPJ相比，温和的tDCS增加了参与者在成本较高的试验中选择利他主义选项的倾向，以及他们在有利但非不利的不公平情况下表现出利他主义的倾向，从而增加了他们的利他主义倾向。这些结果表明，在这两种不同的不公平情况下，rTPJ的神经活动增加会对利他主义产生不同的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Brain and Cognition 医学-神经科学

CiteScore

4.60

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Brain and Cognition is a forum for the integration of the neurosciences and cognitive sciences. B&C publishes peer-reviewed research articles, theoretical papers, case histories that address important theoretical issues, and historical articles into the interaction between cognitive function and brain processes. The focus is on rigorous studies of an empirical or theoretical nature and which make an original contribution to our knowledge about the involvement of the nervous system in cognition. Coverage includes, but is not limited to memory, learning, emotion, perception, movement, music or praxis in relationship to brain structure or function. Published articles will typically address issues relating some aspect of cognitive function to its neurological substrates with clear theoretical import, formulating new hypotheses or refuting previously established hypotheses. Clinical papers are welcome if they raise issues of theoretical importance or concern and shed light on the interaction between brain function and cognitive function. We welcome review articles that clearly contribute a new perspective or integration, beyond summarizing the literature in the field; authors of review articles should make explicit where the contribution lies. We also welcome proposals for special issues on aspects of the relation between cognition and the structure and function of the nervous system. Such proposals can be made directly to the Editor-in-Chief from individuals interested in being guest editors for such collections.