Strategic control and medial frontal negativity: Beyond errors and response conflict
Strategic control and medial frontal negativity: Beyond errors and response conflict
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DOI：
10.1111/j.1469-8986.2005.00258.x
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发表时间：
2005-01-01
期刊：
影响因子：
3.7
通讯作者：
Gratton, G
中科院分区：
文献类型：
--
作者：
Bartholow, BD;Pearson, MA;Gratton, G
时间选择任务中的错误通常会在事件相关电位（ERP）中产生错误相关负波（ERN）。ERN的cri-or特异性已受到显示正确反应阴性（CRN）的研究的挑战。45名参与者参与了侧翼任务，其中侧翼和目标之间的相容性和相容侧翼的概率都被操纵。正确的反应引起了CRN，其幅度的增加与冲突的存在和冲突的概率之间的不匹配的程度，即使在低冲突（兼容）试验。额中央N2分量较大的高冲突（不兼容）正确的反应试验。然而，与最近的一些报道相反，这个N2是最大的，对于高度可能的刺激。这些研究结果表明，修改模型的冲突对响应相关的消极性的影响，以占在准备响应的战略调整。
Errors in timed choice tasks typically produce an error-related negativity (ERN) in the event-related potential (ERP). The cri-or specificity of the ERN has been challenged by Studies showing a correct response negativity (CRN). Forty-five participants engaged in a flanker task in which both compatibility between flankers and target and the probability of compatible flankers were Manipulated. Correct responses elicited a CRN, the amplitude of which increased with the degree of mismatch between the presence of conflict and conflict probability, even on low-conflict (compatible) trials. The fronto-central N2 component was larger on high-conflict (incompatible) correct response trials. However, in contrast to some recent accounts, this N2 was largest For highly probable stimuli. These findings suggest revision to models of the effects of conflict on response-related negativity to account for strategic adjustments made in preparation for the response.