认知控制脑电成分N450的特征与心理功能  

The Electrophysiological Characteristics and Psychological Implications of the N450 Component in Cognitive Control

作　　者：黄炳芳 陈彩琦 HUANG Bing-fang;CHEN Cai-qi(School of Psychology,South China Normal University,Guangzhou 510631,China)

机构地区：[1]华南师范大学心理学院

出　　处：《应用心理学》2019年第3期230-238,共9页Chinese Journal of Applied Psychology

基　　金：国家哲学社会科学基金项目(16BSH094);教育部人文社会科学基金项目(17YJC760052)

摘　　要：N450是潜伏期约为350-500毫秒的事件相关电位负波,是反映认知控制的一种重要电生理指标。N450对深入了解认知冲突干扰效应及开展相关临床研究具有重要的方法学意义。目前研究通过多种实验干扰任务,从冲突加工性质、阶段对其所反映的心理功能进行了探讨,同时对N450的临床应用和个体差异进行了探索,但仍存在较大争议。未来研究应通过使用更适合的分离性实验范式与其他技术手段相结合继续探究N450的心理功能,深化相关理论内涵与扩展应用研究。The N450 refers to a more negative event-related potentials(ERPs) component in the incongruent condition than that in the congruent or neutral conditions in the Stroop task during the 350-500 ms time window,which may reflect a key biomarker of interference effect in cognitive control.It is of great methodological significance for insights into the nature of cognitive interference in conflict processing and for corresponding clinical studies.The present article reviews a variety of studies on the psychological implications of the N450 by different experimental tasks and variants involving perceptual conflict or response conflict,conflict monitoring or conflict resolution.Then,the clinical application and individual difference concerning the N450 are investigated.Future research is also suggested to elucidate the controversies on mental mechanism of the N450 by combining more valid experimental paradigms and technological approaches.

关 键 词：认知控制 N450 STROOP 冲突加工 干扰效应 

分 类 号：B842[哲学宗教—基础心理学]