Walter Hannah J, Li Ruixuan, Munafo Justin, Curry Christopher, Peterson Nicolette, Stoffregen Thomas A
School of Kinesiology, University of Minnesota, USA.
School of Kinesiology, University of Minnesota, USA.
Hum Mov Sci. 2019 Apr;64:389-397. doi: 10.1016/j.humov.2019.03.006. Epub 2019 Mar 12.
Motion sickness is preceded by differences in the quantitative kinematics of body sway between individuals who (later) become sick and those who do not. In existing research, this effect has been demonstrated only in measures of body sway, relative to the earth. However, body sway can become coupled with imposed oscillatory motion of the illuminated environment, and the nature of this coupling may differ between individuals who become sick and those who do not. We asked whether body sway would become coupled to complex oscillations of the illuminated environment, and whether individual differences in such coupling might be precursors of motion sickness. Standing participants (women) were exposed to complex oscillation of the illuminated environment. We examined the strength of coupling as a function of time during exposure. Following exposure, some participants reported motion sickness. The nature and temporal evolution of coupling differed between participants who later reported motion sickness and those who did not. Our results show that people can couple the complex dynamics of body sway with complex imposed motion, and that differences in the nature of this coupling are related to the risk of motion sickness.
晕动病在（后来）患病个体和未患病个体之间身体摆动的定量运动学差异之前就已出现。在现有研究中，这种效应仅在相对于地球的身体摆动测量中得到证实。然而，身体摆动可能会与光照环境的施加振荡运动耦合，并且这种耦合的性质在患病个体和未患病个体之间可能有所不同。我们询问身体摆动是否会与光照环境的复杂振荡耦合，以及这种耦合中的个体差异是否可能是晕动病的先兆。站立的参与者（女性）暴露于光照环境的复杂振荡中。我们在暴露期间检查了耦合强度随时间的变化。暴露后，一些参与者报告有晕动病。后来报告有晕动病的参与者和未报告的参与者之间，耦合的性质和时间演变有所不同。我们的结果表明，人们可以将身体摆动的复杂动态与施加的复杂运动耦合，并且这种耦合性质的差异与晕动病风险有关。
