Fedotchev A I, Bondar' A T, Akoev I G
Institute of Cell Biophysics, Russian Academy of Sciences.
Usp Fiziol Nauk. 2000 Jul-Sep;31(3):39-53.
During the past decade, spectral analysis has become indispensable instrument for different kinds of EEG processing. With the development of dedicated computer system, investigation of shifts in human EEG rhythm under various conditions has improved considerably. However, it is difficult to make general conclusions from this line of research, since a large number of studies are carried out using the ambiguous experimental approaches and different methods. Present paper aims to evaluate a modern state of the art in the field of human EEG rhythmical structure investigation. The results from recent relevant articles are briefly reviewed according to the universal scheme (EEG rhythm--experimental condition--observed effect). Due to such presentation, the obtained results have been summarized and some tendencies of modern investigations have been revealed. The extension of studied frequency range of rhythmical EEG components to both high (> 35 Hz) and low (< 1 Hz) frequencies, the shift to a more detailed spectral structure analysis simultaneously with ignoring the fixed boundaries of traditional EEG rhythms, the growing attempts to reveal EEG rhythmical structure correlates of cognitive activity, and a wide utilization of dynamic approaches for the analysis of brain electrical activity are discussed in some detail. The observed data are indicate of high functional significance and perspectives of human EEG rhythmical structure investigation.
在过去十年中，频谱分析已成为各类脑电图（EEG）处理中不可或缺的工具。随着专用计算机系统的发展，对不同条件下人类脑电节律变化的研究有了显著进展。然而，由于大量研究采用的实验方法模糊且各不相同，很难从这一系列研究中得出一般性结论。本文旨在评估人类脑电节律结构研究领域的现代技术水平。根据通用方案（脑电节律——实验条件——观察到的效应）简要回顾了近期相关文章的结果。通过这种呈现方式，对所得结果进行了总结，并揭示了现代研究的一些趋势。本文还详细讨论了脑电节律成分研究频率范围向高频（>35Hz）和低频（<1Hz）的扩展、在忽略传统脑电节律固定边界的同时转向更详细的频谱结构分析、揭示认知活动脑电节律结构相关性的尝试不断增加以及广泛采用动态方法分析脑电活动等内容。观察到的数据表明人类脑电节律结构研究具有很高的功能意义和前景。
