An ERP study of the processing of response conflict in a dynamic localization task: The role of individual differences in task-appropriate behavior
An ERP study of the processing of response conflict in a dynamic localization task: The role of individual differences in task-appropriate behavior
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DOI：
10.1016/j.clinph.2010.03.009
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发表时间：
2010-08-01
影响因子：
4.7
通讯作者：
Gibbons, Henning
中科院分区：
文献类型：
--
作者：
Fritzsche, Anna-Sophia;Stahl, Jutta;Gibbons, Henning
目的：寻找新的动态定位任务中冲突敏感的ERP成分。它被调查是否这些ERP组件是敏感的个体差异在task-appropriate behavior.Methods：四十四名参与者进行了本地化任务，采用三个差异冲突诱导实验条件：常见的标准条件（O =目标，X =干扰），一种罕见的冲突条件结果：在冲突条件下，反应时和错误率均增加。观测到早期频率敏感成分P3 a和额中N2，晚期冲突敏感成分左中N2、P3 b和CRN。研究人员选择了两组参与者，一组反应迅速而准确，另一组反应缓慢而不准确。有趣的是，在第一组中观察到了左中央N2相关的冲突，而在后一组中观察到了CRN相关。结论：研究结果表明，反应前冲突监测是成功完成任务所必需的，而反应后冲突监测似乎并没有提高绩效。本研究使用了一种新的动态定位任务，以确定ERP组件的反应冲突敏感，但差异预测的好与差的任务性能。(C)2010年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: The study aimed at finding specific conflict-sensitive ERP components in a novel dynamic localization task. It was investigated whether these ERP components are sensitive to individual differences in task-appropriate behavior.Methods: Forty-four participants performed a localization task employing three differentially conflict-inducing experimental conditions: a frequent standard condition (O = target, X = distractor), a rare conflict condition (S = target, O = distractor), and a rare control condition (S = target, X = distractor).Results: Behavioral data revealed increases of RT and error percent in the conflict condition. Early frequency-sensitive components P3a and fronto-central N2, and late conflict-sensitive components left-central N2, P3b, and CRN were observed. Two groups of participants were selected, those responding fast and accurately, and those responding slowly and inaccurately. Interestingly, the left-central N2 correlate of conflict was observed in the first group, whereas the CRN correlate was observed in the latter group.Conclusions: Findings suggest that pre-response conflict monitoring is required to successfully complete the task, whereas post-response conflict monitoring did not seem to improve performance.Significance: The present study used a novel dynamic localization task to identify ERP components that were sensitive to response conflict, but differentially predictive of good vs. poor task performance. (C) 2010 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.