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 versus 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.

中文翻译：

---

奖励交互的神经机制：ERP证据

抑制返回（IOR）是指人对先前提示的位置的目标反应较慢的现象。本研究旨在探讨目标-奖励关联是否受IOR的影响，使用事件相关电位（ERP）探索潜在的神经机制。每个参与者都在外源提示范例中执行了定位任务和颜色识别任务，目标以颜色（绿色/红色）表示，先前与高或低奖励的可能性相关联。两项任务的结果都表明，在低奖励下，N1，Nd和P3分量在提示和未提示试验（即IOR）之间显示出不同的幅度，与提示测试相比，未提示试验的N1和Nd幅度得到了增强，并且提示试验与未提示试验相比，P3幅度有所提高。但是，在高额报酬的情况下，在提示和未提示的试验中，对于任何成分的振幅之间都没有发现差异。这些发现表明，以前与高奖励相关的目标可以抵抗IOR，而当前结果丰富了提示范式中奖励与注意定向之间相互作用的证据。