滞留问题在具有不完全契约关系的特定投资的交易中非常普遍,受到人类信任的影响,合作社,利他行为。最近的神经科学研究表明,TPJ在社会认知和亲社会决策中起着重要作用。然而,大多数研究都集中在右半球的RTPJ,虽然很少有研究关注左半球的LTPJ。这项研究的目的是通过经颅直流电刺激(tDCS)调节LTPJ的兴奋性,并探讨LTPJ对投资的影响,并在重复的滞留游戏中提供参与者的行为。我们的结果表明,与假刺激相比,阴极刺激显着提高了重复滞留游戏中参与者的投资率。一种可能的解释是,由阴极刺激引起的LTPJ活动的变化可能会降低参与者对他人意图的推理能力,从而减少参与者的背叛厌恶行为,,使参与者在反复博弈中不会减少自己的投资行为。
The Hold-up problem is very common in transactions with specific investment in incomplete contractual relationships, which is affected by human trusting, cooperative, altruistic behavior. Recent neuroscience studies have shown that TPJ plays an important role in social cognition and prosocial decision-making. However, most of the studies have focused on RTPJ in the right hemisphere, while few studies have focused on LTPJ in the left hemisphere. The purpose of this study is to modulate the excitability of LTPJ through transcranial direct current stimulation (tDCS) and to explore the effects of LTPJ on the investment and offer behavior of participants in the repeated hold-up game. Our results showed that cathodal stimulation significantly improved the investment rate of participants in the repeated hold-up game compared with sham stimulation. One possible explanation is that the change of LTPJ activity caused by cathodal stimulation may reduce the participants\' inference ability of the others\' intention, thus reducing the participants\' betrayal aversion behavior, so that the participants will not reduce their investment behavior in the repeated game.