Li Fuhong, Wang Jing, Du Bin, Cao Bihua
Advanced Research Institute, Chengdu University, Chengdu, China.
School of Psychology, Jiangxi Normal University, Nanchang, China.
Front Psychol. 2018 Feb 5;9:57. doi: 10.3389/fpsyg.2018.00057. eCollection 2018.
Feedback has two main components. One is valence that indicates the wrong or correct behavior, and the other is the informative value that refers to what we can learn from feedback. Aimed to explore the neural distinction of these two components, we provided participants with a segmented Wisconsin Card Sorting Task, in which they received either positive or negative feedback at different steps. The informative value was manipulated in terms of the order of feedback presentation. The results of event-related potentials time-locked to the feedback presentation confirmed that valence of feedback was processed in a broad epoch, especially in the time window of feedback-related negativity (FRN), reflecting detection of correct or wrong card sorting behavior. In contrast, the informative value of positive and negative feedback was mainly processed in the P300, possibly reflecting information updating or hypothesis revision. These findings provide new evidence that informative values of feedback are processed by cognitive systems that differ from those of feedback valence.
反馈有两个主要组成部分。一个是表明行为对错的效价，另一个是指我们能从反馈中学到什么的信息价值。为了探究这两个组成部分的神经差异，我们为参与者提供了一个分段的威斯康星卡片分类任务，在这个任务中，他们在不同步骤会收到正面或负面反馈。信息价值是根据反馈呈现的顺序来操纵的。与反馈呈现时间锁定的事件相关电位结果证实，反馈的效价在一个较宽的时间段内被处理，特别是在反馈相关负波（FRN）的时间窗口内，反映了对正确或错误卡片分类行为的检测。相比之下，正面和负面反馈的信息价值主要在P300中被处理，可能反映了信息更新或假设修正。这些发现提供了新的证据，表明反馈的信息价值是由不同于反馈效价的认知系统处理的。
