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Motion Sickness Produced by Head Movement as a Function of Rotational Velocity

Earl F. Miller (II)Ashton Graybiel

出版	Naval Aerospace Medical Institute, Naval Aerospace Medical Center, 1970
URL	http://books.google.com.hk/books?id=sXzGlIx-FQ0C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

To measure the stressor stimulus effect of rotational velocity in terms of the number of the standardized head tilt movements required to evoke a common severity level of symptoms characterizing motion sickness, sixteen young healthy subjects were rotated in a laboratory (Stille) rotational chair at various velocities within a range suitable for each subject and the limits of 1.0 to 30.0 rpm. Standardized 90 degree head movements were executed at each test velocity until the preselected and quantitatively determined motion sickness endpoint of moderate (M IIA) or severe (M III) malaise was reached. When individual ability to make head movements without evoking symptoms was exceeded, the derived average stressor effect (E factor) of each head movement varied directly and, in log-log terms, linearly with rotational velocity. These data provide the basis for grading individual susceptibility to Coriolis (motion) sickness with a single numerical score as well as define the high rate of change of Coriolis stressor effect as a function of rotational velocity, which may find practical application for specifying rotational rates of space stations. (Author).