Both the Reward Positivity (RewP) and the novelty N2 component appear within the same spatio-temporal window. This signal overlap impedes the assessment of the RewP evoked by complex novel rewards like affective or motivational imagery. Here we conducted a series of experiments which successfully isolated signals of reward and novelty through spectral decomposition as well as with experimental manipulations that systematically removed the influence of novelty on the reward-evoking image. Together, these findings help explain the nature of this component overlap and provide methodological and analytic techniques for isolating reward- and novelty-specific computations to complex stimuli.

中文翻译：

---

新颖的奖励遮挡了奖励的积极性，以及如何处理

奖励积极性 (RewP) 和新颖性 N2 组件都出现在同一个时空窗口中。这种信号重叠阻碍了对由复杂的新颖奖励（如情感或动机意象）引起的 RewP 的评估。在这里，我们进行了一系列实验，通过谱分解以及实验操作成功地分离了奖励和新颖性的信号，这些实验操作系统地消除了新颖性对唤起奖励的图像的影响。总之，这些发现有助于解释该组件重叠的性质，并提供方法论和分析技术，以将奖励和新颖性特定计算与复杂刺激隔离开来。