Zhang Yinling, Chen Siyang, Hu Xinmu, Mai Xiaoqin
Department of Psychology, Renmin University of China, Beijing, China.
Front Psychol. 2019 Feb 6;10:185. doi: 10.3389/fpsyg.2019.00185. eCollection 2019.
The right temporoparietal junction (rTPJ) has been thought to be associated with the difference in self-other decision making. In the present study, using noninvasive transcranial direct current stimulation (tDCS), we examined whether stimulating the rTPJ could modulate the self-other decision-making difference. We found that after receiving anodal stimulation of the rTPJ, participants were more likely to choose a high-value item for others than for themselves in the situations where the win probability of the high-value item was equal to or greater than that of a low-value item, indicating that elevating the cortical excitability of the rTPJ might increase the self-other decision-making difference in certain decision contexts. Our results suggest that decision making for others depends on neural activity in the rTPJ and regulation of the excitability of the rTPJ can influence the self-other decision-making difference.
右颞顶联合区（rTPJ）被认为与自我-他人决策差异有关。在本研究中，我们使用非侵入性经颅直流电刺激（tDCS），研究刺激rTPJ是否能调节自我-他人决策差异。我们发现，在高价值物品获胜概率等于或大于低价值物品的情况下，接受rTPJ阳极刺激后，参与者为他人选择高价值物品的可能性高于为自己选择，这表明提高rTPJ的皮质兴奋性可能会在某些决策情境中增加自我-他人决策差异。我们的结果表明，为他人做决策取决于rTPJ中的神经活动，调节rTPJ的兴奋性会影响自我-他人决策差异。
