Response-related negativities following correct and incorrect responses: Evidence from a temporospatial principal component analysis
Response-related negativities following correct and incorrect responses: Evidence from a temporospatial principal component analysis
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DOI：
10.1111/j.1469-8986.2012.01365.x
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发表时间：
2012-06-01
期刊：
影响因子：
3.7
通讯作者：
Kathmann, Norbert
中科院分区：
文献类型：
--
作者：
Endrass, Tanja;Klawohn, Julia;Kathmann, Norbert
错误相关负波（ERN/Ne）和正确相关负波（CRN）是两个ERP成分。这些组件的功能仍在讨论中。我们使用了一个视觉大小歧视任务，在三个难度水平，并利用时空主成分分析（PCA），研究是否ERN/Ne和CRN可以解释一个或多个因素。而ERN/Ne下降，更高的任务难度，幅度增加，在顶叶电极的正确反应。PCA揭示了两个时空因素：一个集中分布的因素，正确和不正确的反应之间的差异和额顶分布的因素，有助于ERN/Ne和CRN。这些数据支持的概念，ERN/Ne和CRN可能反映了两个基本过程的组合：一个错误敏感和结果独立方面的反应监测。
Two ERP components have been observed following correct and incorrect responses, the error-related negativity (ERN/Ne) and the correct-related negativity (CRN). The function of these components is still under debate. We used a visual size discrimination task at three difficulty levels and utilized a temporospatial principal component analysis (PCA) to examine whether ERN/Ne and CRN could be explained by one or more factors. While ERN/Ne decreased with higher task difficulty, amplitudes increased for correct responses at parietal electrodes. PCA revealed two temporospatial factors: a centrally distributed factor differing between correct and incorrect responses and a more frontoparietally distributed factor contributing to both ERN/Ne and CRN. These data support the notion that ERN/Ne and CRN might reflect a combination of two underlying processes: an error-sensitive and an outcome-independent aspect of response monitoring.