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为研究头低位模拟失重对运动病症状、垂直视动眼震（ＶＯＫＮ）及体液重新分配的影响，在头低位－１０°的模拟失重状态下，采用大视野的垂直视动刺激，观察１８名正常人的运动病症状、ＶＯＫＮ、激素（ＡＶＰ、ＶＩＰ、ＣＯＲＴ、ＡＬＤＯ）的反应特点。结果表明，头低位－１０°状态下的大视野垂直视动刺激可以诱发出明显的运动病症状，头低位－１０°的垂直视动刺激比坐位更容易诱发运动病。坐位状态ＶＯＫＮ慢相速度有明显的方向性不对称，敏感组ＶＯＫＮ方向性不对称有显著差异（Ｐ＜０．０５）。头低位－１０°时ＶＯＫＮ的不对称现象不明显，向下方向运动的ＶＯＫＮ慢相速度显著增加。分析指出，头低位－１０°状态下垂直视动刺激比坐位和秋千刺激的贡献率大。尿中ＣＯＲＴ（皮质醇）在秋千和头低位的垂直视动刺激前后有显著性增加。提示：大视野的垂直视动刺激与头低位－１０°两种刺激的结合可能成为预测空间运动病的方法之一．
In order to study the effect of head-low simulated weightlessness on motion sickness symptoms, vertical visual acuity (VOKN) and body fluid redistribution, vertical hyperkinesia was used to simulate weightlessness in the head-low -10 ° simulated condition. Eighteen Normal people’s motion sickness symptoms, VOKN, hormones (AVP, VIP, CORT, ALDO) response characteristics. The results showed that the vertical visual stimulation with large field of view at the head-low -10 ° state could induce obvious symptoms of motion sickness. The vertical visual stimulation with head-down -10 ° was more likely to induce motion sickness than the sitting position. There was a significant directional asymmetry in the VOKN slow phase velocity in the sitting state, and a significant difference in the directionality asymmetry of the VOKN in the sensitive group (P <0.05). VOKN asymmetry is not obvious when the head low -10 °, and the slow phase velocity of VOKN moving downward is significantly increased. Analysis pointed out that the head low -10 ° state of vertical visual stimulation than sitting and swing stimuli contribution rate. CORT (cortisol) in urine increased significantly before and after vertical supothotic stimulation of the swing and head low. Tip: Large field of vertical stimulation and the combination of the head low -10 ° two stimuli may be one of the methods to predict spatial motion disease.