An issue involved in the recent development of visual-vestibular driving simulator systems is the simulator sickness felt by the observers. While numerous studies have focused on the effect of the optokinetic factor, there are few data on those of the...
An issue involved in the recent development of visual-vestibular driving simulator systems is the simulator sickness felt by the observers. While numerous studies have focused on the effect of the optokinetic factor, there are few data on those of the vestibular factor. The major role of a driving simulator’s vestibular cues is to represent the acceleration caused by rotating in 3D space. Observers, thus, might frequently experience the instantaneous pulsation triggered by the accelerating scene in the high-realistic contents. The discomfort appears to be proportional to the amount of rotation; thus, clarifying the extent of human tolerance for such a stimulus should maintain the reality and comfortableness.
We report two findings that quantitatively estimate the discomfort for instantaneous pulsation provided generated by motion base system. First, we used a psychophysical method to clarify the threshold of discomfort for pulsations around pitch and roll axes. We also present the effect of the visually predictive sign and observers’ attributions on the threshold. Second, we present various models that, by synthesizing the function of discomfort obtained from the data on the independent direction around pitch and roll, reconstruct observers’ discomfort when they are rotated in the general direction.