急性中度饮酒对人体脑电信号的影响

Effects of Acute Moderate Alcohol Consumption on Human Brain Electrical Signal

分析志愿者在急性中度饮酒前后的脑电信号(EEG)变化,研究急性中度饮酒对人体健康的影响.基于Neuroscan脑电仪构建实验平台,实时采集志愿者在急性中度饮酒前以及饮酒后2,h内的脑电信号数据.利用Curry7软件对数据进行预处理,去除伪迹;预处理后的数据用Matlab中的EEG工具包用小波变换的方式进行特征波形的相对功率计算.得到各个频段(α波、β波、θ波)的功率值在急性中度饮酒前后都有不同程度的变化,在低频段(θ波)表现得尤其明显,在饮酒后1,h达到峰值.由各频段功率值计算得到的疲劳因子R值,与低频段变化趋势基本一致.急性中度饮酒前后大脑疲劳度没有瞬时的变化.大脑疲劳度在急性中度饮酒后1,h达到峰值,并在之后逐渐衰减,直到酒后2,h基本恢复正常水平.

The EEG change of volunteers before and after acute moderate alcohol consumption was analyzed, and the effect of acute moderate alcohol consumption on human health was studied. All of the test system was set up based on the Neuroscan electroencephalograph. Real-time EEG data of volunteers were gathered before acute moderate alcohol consumption and two hours after drinking. After the artifact was removed with the software of Curry7, the EEG feature waves were extracted and the relative power of relevant EEG parameters were calculated with the method of wavelet transform by the software of Matlab. The power of each spectrum (α, β, θ) undergoes changes of different degree before and after acute moderate alcohol consumption, especially at low frequency(θ), and a peak arises after drinking for an hour. The change of the fatigue factor R calculated by the power spectrum values is the same as that of the θ wave. The instantaneous change of brain fatigue does not occur before and after acute moderate alcohol consumption.After acute moderate alcohol consumption, brain fatigue rises slowly over time, the peak occurs in an hour after drinking, then gradually decreases and finally returns to normal two hours later.