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[皮层电位时空组织的子系统及其在脑电图空间同步中的作用]

[The subsystems of the spatial-temporal organization of cortical potentials and their role in EEG spatial synchronization].

作者信息

Knipst I N, Cheremushkin E A, Iakovenko I A

出版信息

Zh Vyssh Nerv Deiat Im I P Pavlova. 1997 Sep-Oct;47(5):812-27.

PMID:9454463
Abstract

Studying successive topograms of potentials made it possible to reveal different types (subsystems) of the spatio-temporal organization of human and animal cortical electrical activity, which covered significant cortical surface. The dominance of the inversion of the sagittal potential gradient in the topograms of the resting state or complicated relief forms in the active states co-existed with oscillations of the mean level of topogram potentials, the contribution of which to the spatial EEG synchronization changed depending on the functional state of the brain. The role of the ratio between these subsystems was shown and the influence of this ratio was demonstrated on the spatial synchronization of cortical potentials in experiments with 11 rabbits (in the course of their adaptation to the environment and learning) and examination of 50 healthy adult subjects (during motor task performance and elaboration of verbal set). The spatial synchronization of cortical potentials was found to have a complex structure, which was determined by the ratio between the effects of subsystems of the spatio-temporal organization of cortical potentials.

摘要

研究连续的电位地形图使得揭示人类和动物皮层电活动时空组织的不同类型(子系统)成为可能,这些类型覆盖了显著的皮层表面。静息状态地形图中矢状电位梯度反转的主导地位或活动状态下复杂的起伏形式与地形图电位平均水平的振荡共存,其对空间脑电图同步的贡献随大脑功能状态而变化。在对11只兔子(在其适应环境和学习过程中)进行的实验以及对50名健康成年受试者(在执行运动任务和阐述言语定势期间)的检查中,展示了这些子系统之间比例的作用,并证明了该比例对皮层电位空间同步的影响。发现皮层电位的空间同步具有复杂的结构,这由皮层电位时空组织子系统的效应之间的比例决定。

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