Munafo Justin, Diedrick Meg, Stoffregen Thomas A
University of Minnesota, Minneapolis, Minnesota, USA.
Exp Brain Res. 2017 Mar;235(3):889-901. doi: 10.1007/s00221-016-4846-7. Epub 2016 Dec 3.
Anecdotal reports suggest that motion sickness may occur among users of contemporary, consumer-oriented head-mounted display systems and that women may be at greater risk. We evaluated the nauseogenic properties of one such system, the Oculus Rift. The head-mounted unit included motion sensors that were sensitive to users' head movements, such that head movements could be used as control inputs to the device. In two experiments, seated participants played one of two virtual reality games for up to 15 min. In Experiment 1, 22% of participants reported motion sickness, and the difference in incidence between men and women was not significant. In Experiment 2, motion sickness was reported by 56% of participants, and incidence among women (77.78%) was significantly greater than among men (33.33%). Before participants were exposed to the head-mounted display system, we recorded their standing body sway during the performance of simple visual tasks. In both experiments, patterns of pre-exposure body sway differed between participants who (later) reported motion sickness and those who did not. In Experiment 2, sex differences in susceptibility to motion sickness were preceded by sex differences in body sway. These postural effects confirm a prediction of the postural instability theory of motion sickness. The results indicate that users of contemporary head-mounted display systems are at significant risk of motion sickness and that in relation to motion sickness these systems may be sexist in their effects.
轶事报告表明，当代面向消费者的头戴式显示系统用户可能会出现晕动病，而且女性可能风险更大。我们评估了其中一款系统——Oculus Rift的致呕特性。头戴设备包含对用户头部运动敏感的运动传感器，这样头部运动就可以用作设备的控制输入。在两项实验中，坐着的参与者玩两款虚拟现实游戏中的一款，时长可达15分钟。在实验1中，22%的参与者报告有晕动病，男性和女性的发病率差异不显著。在实验2中，56%的参与者报告有晕动病，女性的发病率（77.78%）显著高于男性（33.33%）。在参与者接触头戴式显示系统之前，我们记录了他们在执行简单视觉任务时的站立身体摇摆情况。在两项实验中，（后来）报告有晕动病的参与者和没有报告晕动病的参与者在接触前的身体摇摆模式有所不同。在实验2中，晕动病易感性的性别差异之前存在身体摇摆的性别差异。这些姿势效应证实了晕动病姿势不稳定理论的一个预测。结果表明，当代头戴式显示系统的用户有患晕动病的重大风险，而且就晕动病而言，这些系统的影响可能存在性别差异。
