Visual P2 component is related to theta phase-locking

被引：176

作者：

Freunberger, R. ^{[1
]}

Klimesch, W. ^{[1
]}

Doppelmayr, M. ^{[1
]}

Hoeller, Y. ^{[1
]}

机构：

[1] Salzburg Univ, Inst Psychol, Dept Physiol Psychol, A-5020 Salzburg, Austria

来源：

NEUROSCIENCE LETTERS | 2007年 / 426卷 / 03期

关键词：

theta; oscillations; PLI; total power; phase-locking;

D O I：

10.1016/j.neulet.2007.08.062

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

In this study we investigated the hypothesis whether P2-related differences tested in a visual priming paradigm are associated with theta phase-locking. We recorded the EEG from 31 electrodes and calculated phase-locking index and total power differences for frequencies between 2 and 20 Hz. ERPs (event-related potentials) were analyzed for P1, N1 and P2 components. P2 showed strongest task-related amplitude differences between congruent and incongruent targets. A source analyses was performed for the P2 component using sLoreta that revealed local generators of the P2 in parieto-occipital regions. Phase-locking analyses showed specific effects in the theta range (4-6 Hz) appearing in time windows at around the P2 component. We draw the conclusion that phase-locked theta reflect top-down regulation processes mediating information between memory systems and is in part involved in the modulation of the P2 component. (C) 2007 Elsevier Ireland Ltd. All rights reserved.

引用

页码：181 / 186

页数：6

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