2015 年 51 巻 Supplement 号 p. S500-S505
This study was aimed to find out whether there was some difference comparing driving performance and the autonomic nervous system between normal state and sleep deprivation state, between sleep deprivation state and 100% Lavender oil exposed state and between sleep deprivation State and 100% Peppermint oil exposed state, while driving in a driving environment using a driving simulator. The subjects were 10 male drivers between 20 and 45 years age whose age in average was 30.9±7.7 years and who had been driving for 7±6.6 years, the road situation of three-lane road was copied as a driving environment, and the subjects were instructed to keep 1st lane, to keep a constant speed of 110km/h. In this driving condition, the subjects were instructed to steps on the brake until the speed of car is 0km/h, according to "STOP" sign shows in red which displayed on the screen suddenly. As a result of analyzing the reaction distance, there was a significant difference (p<0.05) between normal state and sleep deprivation state. Also, as a result of analyzing the speed average, there was no significant difference all groups. As a result of analyzing the LF/HF ratio, there was no significant difference before and after in all groups. As a result of analyzing the LF/HF ratio after unexpected situation, there was a significant difference (p<0.1) between sleep deprivation state and peppermint state. The results suggest that it could be judged that expressway accidents at 0 a.m. - 6 a.m. are closely related to drowsy driving. This phenomenon is thought monotonous driving environment and lack of sleep is coupled to lower the driving performance, and the peppermint has a statistically significant difference on the change in driving performance comparing sleep deprivation, such as the reaction distance. this means that the odor may be possible to temporarily driving performance improve.
