Assessment of motion sickness in teenager aviation school students using electrodermal activity
Objective To find out whether electrodermal activity(EDA)can be used for accurate assessment of motion sickness in order to provide reference for precise medical selection of teenager flying cadets.Methods A total of 350 students were selected randomly from teenager aviation schools who attended the final stage of medical selection.A 90-second Coriolis acceleration endurance test was performed among these students.A wearable monitoring system was used to collect EDA at the same time.The Graybiel method was adopted to evaluate autonomic nerve symptoms.According to the Graybiel score,it is divided into Group A:Graybiel=0 points,Group B:Graybiel score 1～2 points,and Group C:Graybiel ≥ 3 points.The correlation between changes in EDA and Graybiel scores was analyzed.Results With the subjects with incomplete indicators excluded,301 students were included in this study.It was found that EDA was significantly increased in students with motion sickness,who were divided into three groups according to the total Graybiel scores:0 point(n=173),1～2 points(n=102),and ≥3 points(n=26)groups.The post-test skin conductance reaction(SCR)and skin conductance level(SCL)were significantly higher in the last two groups than in the first group(H=-5.408,-6.781,-3.002,-2.772,P＜0.001,＜0.001,=0.008,=0.017).The pre-test SCL was significantly higher in the second group than in the first group(H=-3.019,P=0.008).Conclusion Our results indicate that EDA can be a useful index for objective evaluation of motion sickness.Real-time EDA data combined with Graybiel scores can help identify motion sickness during medical selection of Air Force cadets.
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