[人类大脑中α节律偶极子源的动态定位]

[The dynamic localization of a dipole source of the alpha rhythm in the human brain].

作者信息

Verkhliutov V M, Bark E D, Shevelev I A, Kamenkovich V M, Konyshev V A, Mikhaĭlova E S, Polianskiĭ V B, Iarnykh V I, Anisimov N V

机构信息

Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.

出版信息

Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 Jan-Feb;49(1):3-11.

PMID:10330700

Abstract

In 11 subjects the dynamic localization (with 2-ms step) of the equivalent current dipole of alpha rhythm during travelling alpha waves was studied using one-dipole 3-layered spherical head model and MRI. The dipole was localized in the occipital cortex and during the development of a single alpha wave it shifted in one or another direction while dipole's moment revealed fan-like rotation mainly in sagittal and horizontal planes. The results obtained indicate changing localization of the alpha-rhythm source in the region corresponding to striate cortex. They seem to prove scanning hypothesis that is still under discussion.

摘要

在11名受试者中，利用单偶极三层球形头部模型和磁共振成像（MRI）研究了行波阿尔法波期间阿尔法节律等效电流偶极子的动态定位（步长为2毫秒）。偶极子定位于枕叶皮质，在单个阿尔法波的发展过程中，它向一个或另一个方向移动，而偶极子矩主要在矢状面和水平面显示出扇形旋转。所获得的结果表明，阿尔法节律源在与纹状皮质相对应的区域中的定位发生了变化。它们似乎证实了仍在讨论中的扫描假说。