Analysis On Mental Stress Of Pilots With Different Personality In Simulated Flight

Objective： To study HR, HRV and P300of pilots with different personality during simulatedflight, and analyze the difference of mental stress and cognitive function between differentpersonality during the flight.Then to provide some evidence for personality recruition and stressmonitoring.Methods：60fighter pilots were randomly chosen to take EPQ personality questionare.Based onthe scores of Extraversion and Neuroticism, the pilots were divided into two levels ofextraversion(typical extraversion and non-typital) and two levels of neuroticism(typical stability andnon-typical).Then60pilots were totally taken part in APR simulated flight training, and HR、HRVwere detected before,during and after flight; P300was analyzed before and after flight training.Inthis survey, factor analysis was used for data analyzing.Results：Analysis on mental stress of pilots with different personality during flight based onHRV research revealed that：①Flight phase showed main effect on HR, HRV amplitude, timedomain(SDNN, RMSSD) and frequency domain indices s(LF power, HF power and LF/HF)(P＜0.05), during flight was apparently elevated than before（P＜0.01）, and after flight,all the indiceswere declined to the berore-flight level except SDNN and RMSSD.There was no difference betweendifferent personality.Emotional stability had main effect on HRV amplitude, SDNN, RMSSD,LFpower and HFpower（P＜0.05）, non-typical emotional stability were higher than typicals.②RMSSD had interaction between extraversion and neuroticism, such that E2N2＞E1N2＞E1N1＞E2N1(E1equals typical extraversion, E2equals non-typical extraversion; N1equals typicalemotional stability, N2equals non-typical emotional stability).HRV amplitude, LFpower andHFpower had interaction between extraversion, neuroticism and flight phase，such that during flightE2N2fluctuated the most and E2N1the least.After flght, LFpower of typical extraversion retrievedwhile non-typical extraversion elevated.During and after flight, all the indices showed a sametendancy: E2N2＞E1N2＞E1N1＞E2N1（P＜0.05）. 2、Analysis on cognitive function of pilots with different personality in simulated flight basedon ERP research revealed that: Non-typical extroversion group showed a longer P300latency thantypical extroversion group（P=0.030），there were no difference between different flight phases andneuroticism groups， and there was no interaction between flight phases, extroversion andneuroticism. Main effect of P300amplitude was extroversion （P=0.023） and neuroticism（P=0.030）， non-typical extroversion group and non-typical instability group showed a largeramplitude.No between-group differences were observed between different flight phases, and therewas no interaction between these factors（P＞0.05）.Conclusions： During flight, all the pilots have eustress.Cognitive function has no differencebefore and after flight.Neuroticism affects the degree of mental stress, the more stable in emotion,the less stress will hanppen.E2N2has more severe stress than E1N2, and if the pilots is typicalextraversion, the difference between N1and N2is more less.Typical extroversion has a more rapidcognitive information processing than non-typical extroversion,but its mental resources areless.Emotional instable utilize more mental resoureces than emotional stable.