自我启动影响奖赏加工的ERP研究

The mechanisms of selfprocessing and reward processing both receive much attention in the field of social cognitive neuroscience. The two themes are investigated separately for a long time. However, recent studies indicated that there is a certain degree overlap between the self network and the reward processing network. Besides the anatomical overlap, some researchers propose the possibility that the two networks are interacted functionally. The existing studies mainly investigated the relation between self network and reward network from the anatomical perspective, no study has explored the functional relationships between the two networks. So the focus of the present program wasto devote to explore the functional relationships between the two networks, specially, how the activation of self processing network influences the outcome evaluation process.The present program will cover how the following subject areas influence outcome evaluation：1.Comparing the selfpriming and other priming; 2.Comparing the selfpriming and mother priming; 3.Comparing the emotional self and cognitive self priming;4. Comparing the positive self and negative self priming; 5.Comparing the independent self and interdependent self priming. Using self priming task and gamble tasks, combined with high time resolution event-related potentials technology, the feedback related negativity and P3 were used as indicators to explore how the differenttypes of selfprocessing affect outcome evaluation. The applicant has the ability to conduct ERP research in the field of social cognitive neuroscience, and has publishedresearch papers on SCI journal and ActaPsychologicaSinica. These conditions serve to ensure the feasibility of the implementation of the program.

自我加工机制与奖赏加工机制都是社会认知神经科学非常关注的研究领域。长期以来，两者的研究都是独立进行的。但是，近年来一些研究者发现，人类的自我加工网络与奖赏加工系统在结构上存在一定程度的重叠，并且提出两者在功能上存在相互影响的可能。已有研究主要考察了自我加工与奖赏加工的在结构上的重叠，尚未有研究从功能上直接探讨自我加工对奖赏加工的影响。本课题聚焦于自我启动如何奖赏加工中的结果评价过程，利用启动任务和经典的赌博任务，结合事件相关电位技术，以反馈相关负波（feedback related negativity）和P3为指标，探讨自我加工影响结果评价的过程。本课题主要包括对比自我启动与他人启动、自我启动与母亲启动、情感自我与认知自我启动、正性自我与负性自我启动、个体自我与集体自我启动等因素对结果评价的影响。申请人已在SCI期刊以及在心理学报上发表研究论文，为本项目的实施提供了相应基础。

本项目主要探讨自我加工对结果评价的影响。实验一发现自我反思相对于他人反思，个体对赌博任务中的结果反馈更敏感，脑电指标反映为更大的反馈相关负波；实验二发现为母亲和为自己赢钱诱发的FRN波幅没有显著差异；实验三发现为自我、为母亲和为父亲赢钱诱发的FRN波幅没有显著差异，三者显著大于为朋友和为陌生人赢钱诱发的FRN波幅；实验四发现情绪自我反思相对于认知自我反思，降低了个体对赌博任务中赢钱结果的敏感性；实验五发现独立型自我建构启动相对于互依型自我建构启动，个体对赌博结果更敏感。综合以上发现，本项目的研究结果表明个体层面和文化层面的自我加工都可以在影响结果评价过程。