Azizan Amzar, Fard Mohammad, Azari Michael F, Benediktsdóttir Bryndís, Arnardóttir Erna Sif, Jazar Reza, Maeda Setsuo
School of Aerospace Mechanical and Manufacturing Engineering, RMIT University, Australia.
Ind Health. 2016 Aug 5;54(4):296-307. doi: 10.2486/indhealth.2015-0095. Epub 2016 Jan 30.
Although much is known about human body vibration discomfort, there is little research data on the effects of vibration on vehicle occupant drowsiness. A laboratory experimental setup has been developed. Vibration was applied to the volunteers sitting on the vehicle seat mounted on the vibration platform. Seated volunteers were exposed to a Gaussian random vibration, with 1-15 Hz frequency bandwidth at 0.2 ms(-2) r.m.s., for 20-minutes. Two drowsiness measurement methods were used, Psychomotor Vigilance Test (PVT) and Karolinska Sleepiness Scale (KSS). Significant changes in PVT (p<0.05) and KSS (p<0.05) were detected in all eighteen volunteers. Furthermore, a moderate correlation (r>0.4) was observed between objective measurement (PVT) and subjective measurement (KSS). The results suggest that exposure to vibration even for 20-minutes can cause significant drowsiness impairing psychomotor performance. This finding has important implications for road safety.
尽管人们对人体振动不适已经了解很多，但关于振动对车辆驾乘人员嗜睡影响的研究数据却很少。现已开发出一种实验室实验装置。对坐在安装在振动平台上的车辆座椅上的志愿者施加振动。让坐着的志愿者暴露于高斯随机振动中，频率带宽为1 - 15赫兹，均方根加速度为0.2米每二次方秒，持续20分钟。使用了两种嗜睡测量方法，即心理运动警觉性测试（PVT）和卡罗林斯卡嗜睡量表（KSS）。在所有18名志愿者中均检测到PVT（p<0.05）和KSS（p<0.05）有显著变化。此外，在客观测量（PVT）和主观测量（KSS）之间观察到中等程度的相关性（r>0.4）。结果表明，即使暴露于振动20分钟也会导致显著的嗜睡，损害心理运动表现。这一发现对道路安全具有重要意义。
