Zheng Ya, Li Qi, Zhang Yuanyuan, Li Qi, Shen Huijuan, Gao Qianhui, Zhou Shiyu
Department of Psychology, Dalian Medical University, Dalian, China.
CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, China.
Psychophysiology. 2017 Jul;54(7):1040-1053. doi: 10.1111/psyp.12855. Epub 2017 Mar 23.
Previous research has shown that consummatory ERP components are sensitive to contextual valence. The present study investigated the contextual valence effect across anticipatory and consummatory phases by requiring participants to play a simple gambling task during a gain context and a loss context. During the anticipatory phase, the cue-P3 was more positive in the gain context compared to the loss context, whereas the stimulus-preceding negativity (SPN) was comparable across the two contexts. With respect to the consummatory phase, the feedback-related negativity (FRN) in response to the zero-value outcome was more negative in the gain versus loss context, whereas the feedback P3 (fb-P3) in response to the zero-value outcome was insensitive to contextual valence. These findings suggest that contextual valence effect occurs at a relative early stage of both the reward anticipation and consumption. Moreover, across the gain and loss contexts, the SPN was selectively correlated with the FRN, whereas the cue-P3 was selectively associated with the fb-P3, pointing to a close association between the anticipatory and consummatory phases in reward dynamics.
先前的研究表明，消费性事件相关电位成分对情境效价敏感。本研究通过要求参与者在收益情境和损失情境下完成一项简单的赌博任务，考察了预期阶段和消费阶段的情境效价效应。在预期阶段，与损失情境相比，收益情境下的线索P3更正，而两种情境下的刺激前负波（SPN）相当。在消费阶段，对零值结果的反馈相关负波（FRN）在收益情境下比损失情境下更负，而对零值结果的反馈P3（fb-P3）对情境效价不敏感。这些发现表明，情境效价效应发生在奖励预期和消费的相对早期阶段。此外，在收益和损失情境中，SPN与FRN选择性相关，而线索P3与fb-P3选择性相关，这表明奖励动态中预期阶段和消费阶段之间存在密切关联。
