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Enhancement of conflict processing activity in human brain under task relevant condition

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机构: [a]Department of Neurology, Xuanwu Hospital, Capital University of Medical Sciences, Beijing, 100053, PR China [b]Institute of Acupuncture and Moxibustion, China Academy of Traditional Chinese Medicine, Beijing, 100700, PR China
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关键词: event-related potentials conflict N270 selective attention match task-relevant

摘要:
To investigate the working mechanism of the conflict processing system, pairs of colored numbers were sequentially presented on a screen to subjects. They were asked to determine if the magnitude or the color of the two numbers was identical. Event-related potentials (ERPs) were recorded at the same time. A negative potential peaking at 270 ms (N270) after the onset of the second number (S2) was elicited when S2 conflicted with the first number (S1) in task-relevant and (or) irrelevant attribute conflicts. The mean amplitude of the N270 was more negative in task relevant conflict than in irrelevant conflict. Therefore, the conflict processing activity can be initiated independently of the task, but is enhanced in task relevant conflict. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

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大类 | 4 区 医学
小类 | 4 区 神经科学
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出版当年[1999]版:
Q2 NEUROSCIENCES
最新[2023]版:
Q3 NEUROSCIENCES

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第一作者机构: [a]Department of Neurology, Xuanwu Hospital, Capital University of Medical Sciences, Beijing, 100053, PR China
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通讯机构: [a]Department of Neurology, Xuanwu Hospital, Capital University of Medical Sciences, Beijing, 100053, PR China
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