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脑电图是大脑皮质神经细胞自发性电活动的记录,通过其描记的频率、波幅和波形以及它的出现形式和分布,籍以研究分析大脑的机能状态。所以,脑的电活动可视为衡量意识状态的标准之一。意识障碍,尤其是昏迷者,若不细问其原因如何,一般来说约有80％的脑电图呈现高波幅慢活动。近年来在昏迷病人也见到了清醒状态才能出现的α节律及其他节律,引起了人们的注意。因此,有人曾建议应根据昏迷者出现的脑电图对昏迷进行分类。现已分为α.β.θ.δ.梭状波、三相波、周期性脑波异常昏迷等。现仅就α.β和梭状昏迷作一介绍。
Electroencephalogram is a record of spontaneous electrical activity of cerebral cortical neurons, through the study of the brain’s functional status, through the frequency, amplitude and waveform of its tracing, as well as its appearance and distribution. Therefore, the electrical activity of the brain can be regarded as one of the criteria for measuring the state of consciousness. Awareness disorders, especially those who are in coma, do not ask about their causes. Generally speaking, about 80% of EEGs show high amplitude and slow activity. In recent years, coma patients have also seen awake state can occur rhythm and other rhythms, aroused people’s attention. Therefore, it has been suggested that stupor should be classified according to the EEG occurring in the coma. Has been divided into α.β.θ.δ.Fusiform wave, three-phase wave, abnormal brain wave abnormal coma and so on. Now only α.β and shuttle coma for an introduction.