Sensitivity of human EEG alpha band desynchronization to different working memory components and increasing levels of memory load

被引：160

作者：

Stipacek, A ^{[1
]}

Grabner, RH ^{[1
]}

Neuper, C ^{[1
]}

Fink, A ^{[1
]}

Neubauer, AC ^{[1
]}

机构：

[1] Graz Univ, Inst Psychol, A-8010 Graz, Austria

来源：

NEUROSCIENCE LETTERS | 2003年 / 353卷 / 03期

关键词：

event-related desynchronization; EEG alpha power; working memory; memory load; short-term memory;

D O I：

10.1016/j.neulet.2003.09.044

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Event-related alpha band desynchronization is frequently used to analyze spatiotemporal cortical activation patterns during the performance of cognitive tasks. In the present paper the sensitivity of alpha band desynchronization to increasing levels of cognitive load and to different cognitive working memory components is investigated. A 27-channel electroencephalogram of 62 participants while solving (a) a short-term memory and (b) a working memory task (dual task), each with five levels of memory load, was analyzed. We found (a) a linearly increasing desynchronization in the upper alpha band with ascending cognitive load, and (b) evidence of the involvement of distinguishable cognitive components (storage and controlled attention) in the memory tasks. (C) 2003 Elsevier Ireland Ltd. All rights reserved.

引用

页码：193 / 196

页数：4

共 18 条

[1] Exploring the central executive [J].