Lackner J R, Graybiel A
Aviat Space Environ Med. 1983 Aug;54(8):675-81.
We compared susceptibility to motion sickness during exposure to sudden-stop stimulation as a function of gravitoinertial force level. Our findings show that susceptibility is greatly enhanced, both with eyes-closed and eyes-open, for zero-g and 2-g conditions in parabolic flight compared with 1-g test conditions. The change in susceptibility is likely related to three factors: alterations in vestibulo-ocular function which result from variations in gravitoinertial force level (28,29); the altered pattern of otolithic activity resulting during variations in gravitoinertial force level; and the altered canal-otolith response synergies that result during exposure to gravitoinertial force levels greater or less than terrestrial levels. These factors are shown to be related to the etiology of space motion sickness and to the alterations in performance and vestibular function that are experienced by astronauts during reentry. An explanation is also proposed for the decrease in susceptibility to motion sickness exhibited by the Skylab astronauts inflight and for some period postflight during exposure to cross-coupled angular accelerations.
我们比较了在突然停止刺激下晕动病易感性与重力惯性力水平之间的关系。我们的研究结果表明，与1g测试条件相比，在抛物线飞行中的零重力和2g条件下，无论闭眼还是睁眼，晕动病易感性都大大增强。易感性的变化可能与三个因素有关：重力惯性力水平变化导致的前庭眼功能改变（28,29）；重力惯性力水平变化期间耳石活动模式的改变；以及在暴露于高于或低于地面水平的重力惯性力水平期间，半规管-耳石反应协同作用的改变。这些因素被证明与太空晕动病的病因以及宇航员在重返大气层期间所经历的性能和前庭功能改变有关。此外，还对天空实验室宇航员在飞行中以及飞行后一段时间内暴露于交叉耦合角加速度时晕动病易感性降低的现象提出了解释。
