Prestimulus delta and theta determinants of ERP responses in the Go/NoGo task
Prestimulus delta and theta determinants of ERP responses in the Go/NoGo task
复制标题
DOI：
10.1016/j.ijpsycho.2012.09.016
复制
发表时间：
2013-03-01
影响因子：
3
通讯作者：
Barry, Robert J.
中科院分区：
文献类型：
--
作者：
De Blasio, Frances M.;Barry, Robert J.
长期以来，持续的低频EEG活动一直与ERP组件及其认知加工解释相关，但很少有研究直接研究刺激前低频EEG-ERP关系，特别是在听觉领域。本研究分别评估了δ（1-3 Hz）和θ（4-7 Hz）频段，以及它们在等概率听觉Go/NoGo范式中对随后五个分量（P1，N1，P2，N2和P3）的刺激前影响。在9个中心点，接受的试验根据其顶点刺激前谱带振幅的上升进行排序，ERPs来自排序的上、下三分之一。受试者内分析包括Go和NoGo反应的振幅和潜伏期以及Go反应速度。只有成分振幅显示高/低刺激前EEG水平的影响。Delta整体调制五个分量-所有振幅都更积极与高prestimulus delta，无论刺激条件。θ不影响P1，但反向调制P2和P3区域，并产生刺激特异性效应在N1，N2和P3。低的θ波前刺激产生了更大的NoGo N2和Go P3，并减少了NoGo P3反应，这些都表明适当地增强了认知加工。两者合计，这些影响模式差异牵连prestimulus三角洲和θ带活动的ERP组件的幅度和与之相关的认知处理的确定。(C)2012爱思唯尔有限公司版权所有。
Ongoing low-frequency EEG activity has long been associated with ERP components and their cognitive processing interpretations, yet few studies have directly investigated the prestimulus low-frequency EEG-ERP relationships, particularly within the auditory domain. The present study assessed the delta (1-3 Hz) and theta (4-7 Hz) bands individually, and their prestimulus influence on five subsequent components (P1, N1, P2, N2, and P3) within an equiprobable auditory Go/NoGo paradigm. At the nine central sites, accepted trials were sorted according to their ascending vertex prestimulus spectral band amplitude, and ERPs were derived from the upper and lower sorted thirds. The within-subjects analyses included amplitudes and latencies for both Go and NoGo responses, and Go response speed. Only component amplitudes showed effects of high/low prestimulus EEG level. Delta globally modulated the five components - all amplitudes were more positive with high prestimulus delta, regardless of stimulus condition. Theta did not influence P1, but inversely modulated P2 and P3 regionally, and produced stimulus-specific effects in N1, N2, and P3. Low prestimulus theta produced greater NoGo N2 and Go P3, and reduced NoGo P3 responses, each of these suggesting appropriately enhanced cognitive processing. Taken together, these effect patterns differentially implicate prestimulus delta and theta band activity in the determination of ERP component amplitudes and the cognitive processing associated with them. (C) 2012 Elsevier B.V. All rights reserved.