Center for Brain and Cognitive Sciences and Department of Psychology, Peking University, Beijing 100871, China.
Neuroscience. 2012 Jan 3;200:50-8. doi: 10.1016/j.neuroscience.2011.10.035. Epub 2011 Oct 30.
Making a trust decision in interpersonal relationship involves forming positive expectation toward the decision outcome. Previous studies have suggested that trust and distrust are qualitatively distinct and have differential neurocognitive substrates. In this study, we investigated how trust choice would modulate brain responses to decision outcome in a modified coin-toss game. Participants received statements from partners concerning the results of coin-toss and decided whether to believe the truthfulness of the statements. In two experiments, event-related potentials (ERPs) to the real results revealed after the trust choice demonstrated differential patterns following trust and distrust choices. Both the feedback-related negativity (FRN) and the P300 showed effects of outcome valence following trust choices, but the FRN effect was reduced following distrust choices. Thus, trust choice creates different contexts in which aspects of decision outcome can be encoded simultaneously by the FRN. The FRN may reflect the subjective evaluation of decision outcome in a specific context rather than a general expectancy towards the outcome.
在人际关系中做出信任决策涉及对决策结果形成积极的期望。先前的研究表明，信任和不信任是性质不同的，具有不同的神经认知基础。在这项研究中，我们调查了在修改后的掷硬币游戏中，信任选择如何调节大脑对决策结果的反应。参与者从合作伙伴那里收到有关掷硬币结果的陈述，并决定是否相信陈述的真实性。在两个实验中，信任选择后出现的与真实结果相关的事件相关电位（ERP）表明，在信任和不信任选择后，反应模式存在差异。反馈相关负波（FRN）和 P300 都显示出信任选择后结果效价的影响，但不信任选择后 FRN 效应减弱。因此，信任选择创造了不同的情境，在这些情境中，FRN 可以同时对决策结果的各个方面进行编码。FRN 可能反映了特定情境下对决策结果的主观评价，而不是对结果的一般期望。
