Anodal transcranial direct current stimulation of the right temporoparietal junction enhances the self-effacing bias in Japanese individuals
Anodal transcranial direct current stimulation of the right temporoparietal junction enhances the self-effacing bias in Japanese individuals
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DOI：
10.1007/s40167-018-0064-4
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发表时间：
2018-05
期刊：
影响因子：
--
通讯作者：
Ryota Takano;M. Nomura
中科院分区：
文献类型：
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作者：
Ryota Takano;M. Nomura
确定社会事件的原因使我们能够理解为什么我们的环境以某种方式与我们相互作用。虽然以前的研究表明右颞顶交界处（rTPJ）与内部归因有关，但因果关系尚不清楚。本研究首先探讨经颅直流电刺激（tDCS）是否会改变rTPJ的归因倾向，以及如何改变。其次，由于日本个体倾向于将自我隐退归因作为一种社会适应行为，我们从另一个角度考察了rTPJ激活的增加是否会增加对社会奖励高度敏感的个体的自我隐退归因，rTPJ激活的增加促进了自我概念的形成过程。与这些预测一致，我们发现rTPJ激活的增加增强了自我贬低偏见，并且这种关系在高奖励依赖（RD）个体中特别观察到。我们还发现，高RD参与者在刺激后需要更长的时间来避免失败的自我责任。这些结果表明，rTPJ的阳极tDCS可能加剧日本个体的自责倾向。
Identifying the cause of social events enables us to understand why our environment interacts with us in a certain way. Although previous studies suggest that the right temporoparietal junction (rTPJ) is associated with internal attribution, the causal relationship remains unclear. The present study, firstly, aimed to investigate whether and how the attributional tendency could change with anodal transcranial direct current stimulation (tDCS) of the rTPJ. Secondly, since Japanese individuals tend to perform self-effacing attribution as a socially adaptive behavior, we examined whether the increased activation of the rTPJ, which facilitates the process of shaping self-concept from another perspective, might increase self-effacing attributions specifically among individuals who are highly sensitive to social rewards. Consistent with these predictions, we found that the increased activation of the rTPJ enhanced self-effacing bias, and this relationship was specifically observed among high reward dependent (RD) individuals. We also revealed that it took a longer time for the high RD participants to avoid self-responsibility for failure after the stimulation. These results suggest that anodal tDCS of the rTPJ could exacerbate self-blaming tendencies in Japanese individuals.