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No Money No Problem: Enhanced Reward Positivity in the Absence of Monetary Reward

机译:没有钱就没有问题:在没有货币奖励的情况下增强的奖励积极性

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摘要

The reward-related positivity (RewP) is an event-related potential (ERP) with a positive amplitude occurring approximately 250–350 ms post-feedback at frontocentral electroencephalogram (EEG) electrode sites. The RewP is typically elicited in monetary gambling tasks and has a relatively larger amplitude for positive vs. negative outcomes. However, the extent to which RewP amplitude is modulated by non-monetary feedback is less clear. To address this issue, EEG was used to record reward-related electrocortical activity during a simple non-monetary gambling task. We hypothesized that the RewP would be enhanced for non-monetary wins relative to losses, which was supported by the results. In our supplementary material, we provide additional analyses suggesting that this effect was not observed for the P3. In sum, RewP amplitudes were larger for positive (nonmonetary) feedback relative to negative feedback at frontocentral electrode sites—suggesting that monetary reward is not necessary to elicit the RewP.
机译:奖励相关正性(RewP)是事件相关电位(ERP),其正振幅发生在额中央脑电图(EEG)电极位点反馈后约250–350 ms。 RewP通常是在金钱赌博任务中引起的,对于积极结果与消极结果,幅度相对较大。但是,由非货币反馈调制RewP幅度的程度尚不清楚。为了解决这个问题,在简单的非金钱性赌博任务中,使用了EEG来记录与奖励相关的皮层活动。我们假设相对于损失而言,非货币性获胜者的RewP将得到增强,这一结果得到了支持。在我们的补充材料中,我们提供了其他分析,表明未对P3观察到这种作用。总之,相对于额中央电极部位的负反馈,正(非货币)反馈的RewP幅度较大,这表明金钱奖励对于引发RewP并不是必需的。

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