Perception of Body Position and Susceptibility of Motion Sickness as Functions of Angle of Tilt and Angular Velocity in Off-Vertical Rotation,
Abstract
Four normal subjects manifested little or no susceptibility to motion sickness in a chair device tilted 10 degrees off-vertical and rotated at 2.5 rpm; with further rate increases the end-point to mild symptoms was always reached and within increasingly short durations. Susceptibility was maximal at either 15 rpm or 20 rpm but with higher rotational rates declined rapidly, reaching a plateau of relatively low susceptibility at 40 rpm and 45 rpm; furthermore, at these higher velocities, the subjects began to lose their sensation of being tilted off-vertical. Two subjects were asymptomatic when the chair was tilted 2.5 degrees off-vertical and rotated at 17.5 rpm; with greater angles of tilt susceptibility of all subjects increased in ever-decreasing amounts. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 04, 1973
- Accession Number
- AD0772702
Entities
People
- Ashton Graybiel
- Earl F. Mill
Organizations
- Naval Aerospace Medical Research Laboratory