Li Xian, Zhang Meichen, Wu Lulu, Zhang Qin, Wei Ping
Beijing Key Laboratory of Learning and Cognition, School of Psychology, Capital Normal University, Beijing, China.
Beijing Advanced Innovation Center for Imaging Technology, Capital Normal University, Beijing, China.
Front Hum Neurosci. 2021 May 3;15:608427. doi: 10.3389/fnhum.2021.608427. eCollection 2021.
Inhibition of return (IOR) refers to the phenomenon that a person is slower to respond to targets at a previously cued location. The present study aimed to explore whether target-reward association is subject to IOR, using event-related potentials (ERPs) to explore the underlying neural mechanism. Each participant performed a localization task and a color discrimination task in an exogenous cueing paradigm, with the targets presented in colors (green/red) previously associated with high- or low-reward probability. The results of both tasks revealed that the N1, Nd, and P3 components exhibited differential amplitudes between cued and uncued trials (i.e., IOR) under low reward, with the N1 and Nd amplitudes being enhanced for uncued trials compared to cued trials, and the P3 amplitude being enhanced for cued trials vs. uncued trials. Under high reward, however, no difference was found between the amplitudes on cued and uncued trials for any of the components. These findings demonstrate that targets that were previously associated with high reward can be resistant to IOR and the current results enrich the evidence for interactions between reward-association and attentional orientation in the cueing paradigm.
返回抑制（IOR）是指个体对先前被提示位置处的目标做出反应的速度较慢的现象。本研究旨在探讨目标-奖励关联是否受返回抑制影响，运用事件相关电位（ERP）来探究其潜在的神经机制。每位参与者在外源性提示范式下执行一个定位任务和一个颜色辨别任务，目标以先前与高奖励概率或低奖励概率相关联的颜色（绿色/红色）呈现。两项任务的结果均显示，在低奖励条件下，N1、Nd和P3成分在提示试验和未提示试验之间（即返回抑制）呈现出不同的振幅，与提示试验相比，未提示试验的N1和Nd振幅增强，而提示试验与未提示试验相比，P3振幅增强。然而，在高奖励条件下，任何成分的提示试验和未提示试验的振幅之间均未发现差异。这些发现表明，先前与高奖励相关联的目标可抵抗返回抑制，且当前结果丰富了在提示范式中奖励关联与注意定向之间相互作用的证据。
