ERP correlates of feedback and reward processing in the presence and absence of response choice
ERP correlates of feedback and reward processing in the presence and absence of response choice
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DOI：
10.1093/cercor/bhh153
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发表时间：
2005-05-01
期刊：
影响因子：
3.7
通讯作者：
Cohen, JD
中科院分区：
文献类型：
--
作者：
Yeung, N;Holroyd, CB;Cohen, JD
反馈负性是与不利结果相关的反馈刺激引起的事件相关脑电位的一个组成部分。本研究调查了这一组成部分是否反映了评价的效价经验的结果或学习的过程中，导致这些结果的行动。后一种假设预测，只有当负面结果与执行的行动有关时，才能观察到反馈的负面性。与这一预测相反，在简单的金钱赌博任务中，参与者没有主动选择（实验1），也没有明显的行动（实验2）。然而，在这些任务中，相对于赌博任务，其中的结果似乎取决于参与者的反应选择的组件的幅度降低。这种减少与参与者参与任务的主观评分的变化相关，这表明由反馈消极性索引的评估过程对正在进行的事件的动机意义敏感。
The feedback negativity is a component of the event-related brain potential that is elicited by feedback stimuli associated with unfavorable outcomes. The present research investigated whether this component reflects an evaluation of the valence of experienced outcomes or a process of learning about actions that led to those outcomes. The latter hypothesis predicts that the feedback negativity should be observed only when negative outcomes are experienced in relation to executed actions. Contrary to this prediction, feedback negativities were observed in simple monetary gambling tasks in which participants made no active choices (experiment 1) and no overt actions (experiment 2). However, the amplitude of the component was reduced in these tasks relative to a gambling task in which the outcomes appeared to be contingent upon participants' response choices. This reduction was correlated with changes in participants' subjective ratings of involvement in the tasks, suggesting that the evaluative process indexed by the feedback negativity is sensitive to the motivational significance of ongoing events.