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  • Title: [Comparison between motion sickness induced by reversed vision and that by parallel swing].
    Author: Tong BL, Zhang XY, Gu HG.
    Journal: Space Med Med Eng (Beijing); 1999 Feb; 12(1):18-22. PubMed ID: 11765772.
    Abstract:
    OBJECTIVE: To make clear the characteristics of motion sickness induced by reversed vision and to see whether it can be used in motion sickness experiments. METHODS: 10 healthy young men experienced walking tests wearing up-down or left-right reversing prisms, and parallel swing test on different days with intervals of 5-7d. Ataxia and motion sickness symptoms induced by walking wearing reversing prisms and those by parallel swing were observed. The reversed vision tolerance index (RVTI) and linear acceleration tolerance index (LATI) were calculated by an empirical formula. RESULTS: Both types of reversing prisms can induce obvious ataxia and motion sickness symptoms. The ataxia is correlative (P<0.05) with the susceptibility to motion sickness. In comparison with symptoms of swing motion sickness, the symptoms of reversed vision motion sickness are not too serious and appear slowly. There are correlativities (P< 0.01) between the susceptibility to motion sickness induced by up-down and left-right reversing prisms. The susceptibilities to motion sickness induced by reversing prisms are not correlative completely with that by swing. CONCLUSION: Reversed vision test is simple and easy and can be used for simulating space motion sickness or training of adaptation to sensory conflict on the ground.
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