基于眼动指标的脑力疲劳识别研究

Brain Fatigue Recognition Based on Indicators of Eye Movement

为减少因脑力疲劳导致的安全事故的发生,研究如何测量和识别脑力疲劳具有十分重要的现实意义。本文提出通过作业前后心算可靠性下降率作为判断脑力疲劳程度的指标,利用眼动追踪仪Tobii Glasses设备测量被试者疲劳前后的瞳孔直径、注视点、陀螺和加速计等眼动参数指标,探究被测试者眼动指标变化规律与脑力疲劳之间的关系。结果表明:发生脑力疲劳时瞳孔直径增加,陀螺和加速计的值减小,注视点的分散程度增加。瞳孔直径、注视点、陀螺和加速计等眼动指标都与脑力疲劳相关。本文研究结果可为建立脑力疲劳评价指标体系和预测脑力疲劳奠定基础。

In order to reduce the occurrence of safety accidents caused by mental fatigue,it is of great practical significance to study how to measure and identify mental fatigue.This paper puts forward that the decline rate of reliability of mental arithmetic before and after operation can be used as an indicator to judge the degree of mental fatigue.Tobii Glasses equipment is used to measure the indicators of eye movement such as pupil diameter,fixation point,gyro and accelerometer before and after fatigue,so as to explore the relationship between the change laws of eye movement indicator and mental fatigue.The results show that the pupil diameter increases,the gyro and accelerator values decrease,and the dispersion of fixation increase when mental fatigue occurs.Eye movement indicators such as pupil diameter,fixation point,gyro and accelerometer are related to mental fatigue.The results of this study can lay a foundation for the establishment of mental fatigue evaluation index system and prediction of mental fatigue.