Can Passengers' Active Head Tilt Decrease the Severity of Carsickness? Effect of Head Tilt on Severity of Motion Sickness in a Lateral Acceleration Environment
Can Passengers' Active Head Tilt Decrease the Severity of Carsickness? Effect of Head Tilt on Severity of Motion Sickness in a Lateral Acceleration Environment
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DOI：
10.1177/0018720812436584
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发表时间：
2012-04-01
期刊：
影响因子：
3.3
通讯作者：
Doi, Shun'ichi
中科院分区：
文献类型：
--
作者：
Wada, Takahiro;Konno, Hiroyuki;Doi, Shun'ichi
目的：我们研究了在汽车侧向加速的情况下，乘客头部倾斜策略对晕车严重程度的影响。背景：众所周知，司机通常比乘客更不容易晕车。然而，同样众所周知的是，司机在通过曲线时，他或她的头向曲线中心倾斜，而乘客的头则朝相反的方向移动。因此，我们假设倾斜头部策略具有降低晕车严重程度的效果。方法：当参与者坐在导航员座位上时，乘用车在带有塔架回转的准椭圆形轨道上行驶。当参与者感觉到晕车的初始症状或赛车跑完20圈时，实验就终止了。在自然倾斜头部的情况下，参与者被指示要自然地坐着，放松，而不是故意反对横向加速。在主动倾斜条件下，受试者被要求在离心力加速的作用下倾斜头部，从而模仿驾驶员的头部倾斜。结果：主动条件下完成的圈数明显多于自然条件下。此外，活动状态下的晕动病和症状的主观评分明显低于自然状态。结论：我们建议主动倾斜头部以对抗离心力加速可以降低晕动病的严重程度。应用：本研究的潜在应用包括开发一种减少晕车的方法学。
Objective: We investigated the effect of the passenger head-tilt strategy on the severity of carsickness in lateral acceleration situations in automobiles.Background: It is well known that the driver is generally less susceptible to carsickness than are the passengers. However, it is also known that the driver tilts his or her head toward the curve center when negotiating a curve, whereas the passenger's head moves in the opposite direction. Therefore, we hypothesized that the head-tilt strategy has the effect of reducing the severity of carsickness.Method: A passenger car was driven on a quasi-oval track with a pylon slalom while the participant sat in the navigator seat. The experiment was terminated when either the participant felt the initial symptoms of motion sickness or the car finished 20 laps. In the natural head-tilt condition, the participants were instructed to sit naturally, to relax, and not to oppose the lateral acceleration intentionally. In the active head-tilt condition, the participants were asked to tilt their heads against the centrifugal acceleration, thus imitating the driver's head tilt.Results: The number of laps achieved in the active condition was significantly greater than that in the natural condition. In addition, the subjective ratings of motion sickness and symptoms in the active condition were significantly lower than those in the natural condition.Conclusion: We suggest that an active head tilt against centrifugal acceleration reduces the severity of motion sickness.Application: Potential applications of this study include development of a methodology to reduce carsickness.