The selection and suppression of action: ERP correlates of executive control in humans

被引：65

作者：

Jackson, SR ^{[1
]}

Jackson, GM ^{[1
]}

Roberts, M ^{[1
]}

机构：

[1] Univ Wales, Sch Psychol, Ctr Percept Attent & Motor Sci, Bangor LL57 2DG, Gwynedd, Wales

来源：

NEUROREPORT | 1999年 / 10卷 / 04期

基金：

英国惠康基金;

关键词：

event-related potentials; executive function; frontal lobes; go/no-go; N2; component; P300;

D O I：

10.1097/00001756-199903170-00035

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

A key aspect of higher cortical function is the ability to selectively withhold or suppress action where appropriate. To examine the time course of executive control we used dense-sensor EEG recording techniques to study event-related electrical potentials (ERPs during a visual 'go/no-go' task. We show that during both go and no-go trials there is a positive deflection in the ERP, which develops over posterior parietal sensors similar to 350 ms (P300) after the onset of a conditional visual stimulus, but. is selectively suppressed during no-go trials. We also show that this modulation of the parietal P300 is preceded by a negative deflection in the ERP recorded over frontal cortex (N2), which is apparent only for no-go trials. We suggest that this signal provides an electrophysiological marker in man for the decision to withhold the execution of a motor response. NeuroReport 10:861-865 (C) 1999 Lippincott Williams & Wilkins.

引用

页码：861 / 865

页数：5

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