噪声和音乐对脑电功率谱的影响

目的：观察飞行员在安静、噪声和音乐３种状态下的脑电功率谱的变化特点，为航天员的心理放松训练提供一客观生理依据。方法：记录了１２名飞行员在安静、噪声和音乐状态下的１６导连续脑电图，并进行了６个频段的功率谱分析。结果：安静状态和噪声状态下以及安静状态和音乐状态下脑电能量变化的比较在统计学上的无显著性差异；噪声状态和音乐状态的比较从频域上看，在音乐状态下，脑电能量在α１频段呈明显减少趋势，在θ频段呈增加趋势；从空间域上看，脑电能量的变化主要集中在前额颞区和中央区。结论：脑电变化与人的情绪变化密切相关，音乐可起到放松作用；声音对脑电的影响有很大的个体差异，放松训练须因人而宜。

Effects of Noise and Music on EEG Power Spectrum.

Objective. To observe the effect of noise and music on EEG power spectrum. Method. 12 healthy male pilots aged 30 +/- 0.58 years served as the subjects. Dynamic EEG from 16 regions was recorded during quiet, under noise or when listening to music using Oxford MR95 Holter recorder. Changes of EEG power spectrum of delta, theta, alpha1, alpha2, beta1 and beta2, frequency components in 16 regions were analyzed. Result. The total alpha1 power was significantly decreased, while the total theta power was significantly increased when listening to music; It implies that the interhemispheric transmission of information in the frontotemporal areas might be involved. Conclusion. The changes of the EEG power spectrum were closely related to man's emotions; relaxation was associated with music; Individual difference exists in the influence of sound on EEG.