Research on Comprehensive Assessment Method of Mental Fatigue in Monitoring Task / 航天医学与医学工程

ABSTRACT

Objective To study the relationship between eye movement,HRV indexes and mental fatigue,find feasible objective indexes and build the comprehensive method to evaluate mental fatigue.Methods When twenty subjects executed the simulated monitoring task for 60 min,pupil diameter and ECG data were recorded by eye tracker system and Holter.The subjects were divided into 2 groups(fatigued group/scarcely fatigued group) according CFF(critical flicker frequency) and reaction time(RT).Based on comparison of various indexes between pre-and post-monitoring task,potent indexes were extracted to evaluate mental fatigue.Results After monitoring task,the change of fatigue feeling,Perclos,r-MSSD,PNN50,HF,LF and TP were significantly different in two groups.Conclusion It's suggested that psychology,Perclos and HRV indexes can be used to build the multilevel comprehensive method which can detect mental fatigue quantitatively and qualitatively.