Although significant main effects were found for both gender and condition, the findings were opposite of those hypothesized. Possible explanations for these findings are discussed. To alleviate the problem, it is first necessary to accurately and reliably quantify the amount and type of visual motion stimulation that leads to motion sickness-like discomfort. This paper describes a human performance-based approach to the development of a system capable of measuring the visual stimulus for motion sickness. Military flight simulator trainees reported their severity levels of sickness.
Results show a significant positive correlation between roll motion and overall sickness.
Development of these and another method to quantify the visual stimulus for cybersickness are discussed. The two displays were driven in a sinusoidal fashion at various phase relationships relative to one another. Results revealed that the fidelity of the motion experience depended upon the phase relationship between the two displays. Results also indicated that when an appropriate phase relationship was used, the vestibular display significantly improved the fidelity of the motion experience when compared to a visual-only display. In virtual environment applications, there is a tradeoff between the quality of the graphic image and the speed at which the application runs.