气功入静过程中自发脑电波功率谱及相干函数的分析

AN ANALYSIS ON EEG POWER SPECTRUM AND COHERENCE DURING QUIET STATE IN QIGONG

用脑电技术和功率谱与相干函数的计算机分析方法,对78名受试者,分别进行了气功入静、一般休息和普通睡眠时的不同脑电变化规律的研究。结果表明入静过程能够使额区脑电能量在δ频段下降,在α频段上升,并在特定频率附近额枕脑电相干值增大。由此提出了入静深度指数概念,并证明了:(1)与一般休息相比,入静深度指数在练功时增大,在睡眠时下降,表示入静过程有自己的特殊规律。(2)内养功、强壮功、虚明功的入静深度指数无明显差异,说明不同练功方法均能达到入静的效果。

This paper reports the effects of Qigong (breathing exercise) onEEG power spectrum and coherence in 78 normal persons between theages of 32 to 72, who volunteered to subject themselves to spectralanalysis. The results of comparative studies on EEG between the quietstate in. Qigong, the normal resting state and. sleep indicated that inthe case of Qigong, there was a decrease of the δ power and an increaseof a power in the frontal area, as well as an increase of the coherencevalues at definite frequencies between the frontal and the occipitalareas. An index of the quietness level,in Qigong was thus produced.Compared with the restinng state, the index was higher in Qigong andlower in sleep. Although the index demonstrated the specific characterof the quiet state in Qigong, no significant index differences weredetected among various kinds of Qigong, Furthermore, the indexconfirmed the similar effects of various kinds of Qigong in achievingthe quiet state.