基于生理信号的精神疲劳评估  

Mental fatigue assessment based on physiological signals

作　　者：夏岚[1] 王见荣[1] 梁妃学[1] 李伟龙 郭劲松[1] 邓亲恺[1] 

机构地区：[1]南方医科大学基础医学院生物信息学系,广东广州510515 [2]广州森杨电子科技有限公司,广东广州510515

出　　处：《南方医科大学学报》2012年第6期870-873,共4页Journal of Southern Medical University

基　　金：广东省科技计划项目(2010A030500007;2011B010200009;2010B090400103)

摘　　要：目的通过非介入式的生理参数的监测,评估精神疲劳。方法根据实验对象的反应时间在反应时测试实验过程中伴随疲劳而发生的变化,记录14例实验对象疲劳过程前后的皮肤电活动、心率、心率变异性3组生理参数,并进行统计分析。结果人体清醒和精神疲劳状态下的平均皮肤电导水平、平均心率、总功率密度、极低频功率密度占总功率密度百分比、高频功率密度占总功率密度百分比均有显著性差异。结论通过监测皮肤电活动、心率和心率变异性等生理参数对人体精神疲劳进行评估的方法具有无创、有效和实用的特点,有较好的运用前景。Objective To assess mental fatigue by noninvasive monitoring of the physiological signals. Methods The changes in the physiological parameters including the electrodermal activity, heart rate and heart rate variability were analyzed in 14 subjects performing the reaction-time tasks when fatigue and changes in the reaction time occurred. Results The average skin conductance level, average heart rate, and heart rate variability parameters including the total power density, percentage of the very low power density, percentage of high power density all differed significantly between the sober state and the mental fatigue state. Conclusion Monitoring the physiological parameters including the electrodermal activity, heart rate and heart rate variability is a noninvasive, effective and practical approach to mental fatigue assessment.

关 键 词：精神疲劳 反应时间 皮肤电活动 心率 心率变异性 

分 类 号：R318[医药卫生—生物医学工程]