Aviat Space Envir Md
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Aviat Space Envir Md · Jul 2008
Comparative StudyNauseogenicity of off-vertical axis rotation vs. equivalent visual motion.
Off-vertical axis rotation (OVAR) provokes motion sickness. The visual motion equivalent to OVAR in simulators is also nauseogenic. Our experiment compared the nauseogenicity of OVAR vs. visual motion. ⋯ OVAR was twice as nauseogenic as visual motion. Headache during visual motion suggests mechanisms in common with migraine. We hypothesize that subjects who fared better in the light used visual cues to resolve sensory conflict, whereas subjects who were equally susceptible in light and dark made poor use of visual cues; perhaps a form of 'field dependency'. This may explain why some people prefer 'a view of the road ahead' to help against motion sickness whereas others shut their eyes.