精神疲劳对前额叶脑电信号关联性的影响

Effect of mental fatigue on the correlation of electroencephalogram signals in prefrontal lobe

为探讨精神疲劳对大脑不同脑区脑电信号关联性的影响,运用相关分析法,分析了8位受试者在下午2:00与下午4:00精神疲劳状态下,前额叶对称导联脑电信号的互相关系数的变化规律。发现下午2:00与下午4:00的互相关系数存在显著性差异,前额叶Fp1与Fp2对称导联脑电信号的相关性随着精神疲劳程度的增加而降低,精神疲劳使得前额叶对称导联脑电信号存在一定的“失步”现象。研究表明,精神疲劳对前额叶对称导联脑电信号的关联性有显著影响;利用互相关分析法对前额叶的脑电信号进行分析,可以进一步加深了解人们的认知与心理活动。

In order to explore the effect of mental fatigue on the correlation of electroencephalogram(EEG)signals in different brain regions,the correlation analysis method was used to analyze the cross correlation coefficients of the symmetrical lead EEG signals in the prefrontal lobes of 8 subjects in the mental fatigue states at 2:00 p.m.and 4:00 p.m..It was found that there is a significant difference between the cross correlation coefficient at 2 p.m.and the one at 4 p.m.The correlation between the Fp1 and Fp2 symmetrical lead EEG signals in the prefrontal lobes decreases with the increase of mental fatigue.The research shows that mental fatigue has a significant effect on the correlation of the symmetrical lead EEG signals in the prefrontal lobes.The cross correlation analysis of the EEG signals in the prefrontal lobes can further understand cognition and mental activities.