Do changes in coherence always reflect changes in functional coupling?

被引：67

作者：

Florian, G

Andrew, C

Pfurtscheller, G

机构：

[1] Ludwig Boltzmann Inst Med Informat & Neuroinforma, A-8010 Graz, Austria

[2] Graz Univ Technol, Inst Biomed Engn, Dept Med Informat, A-8010 Graz, Austria

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1998年 / 106卷 / 01期

基金：

奥地利科学基金会;

关键词：

electroencephalogram; coherence; alpha rhythm; Mu rhythm; voluntary movement; event-related desynchronisation;

D O I：

10.1016/S0013-4694(97)00105-3

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

It is well known that the rhythmic activity within the alpha band in the central area may be composed of two different types of rhythms: (i) the Rolandic mu rhythm, representing the intrinsic activity of the sensorimotor area, and (ii) rhythmic activity believed to be generated within parieto-occipital areas and to extend into central regions through volume conduction (the;classical alpha rhythm'). In this paper we clearly demonstrate that this second type of rhythmic activity is not due to volume conduction from parieto-occipital areas. We also demonstrate the significant impact of the coexistence of these two types of rhythms on the interpretation of interhemispheric coherence measurements. (C) 1998 Elsevier Science Ireland Ltd.

引用

页码：87 / 91

页数：5

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