Ujike Hiroyasu

The virtual reality (VR) environment is a hot topic in recent years. It entertains users with near real-life experiences, but it can also cause VR sickness in users. The relationship between our motion and resulting sensory information such as visual sensory information in the VR environment is different from that in everyday environments. VR sickness is considered a physiological response that occurs in the acclimation process. The relationship between our motion and sensory information is important in determining the position of our body in space. Besides VR sickness, it is also reported that our motion, spatial perception, and cognition are affected in the acclimation process. To improve the compatibility of the environment created by new video technologies, including VR, with humans, we identify necessary compatibility conditions. For this, we study human visual spatial perception, interaction with motion, and biological impact on the human body, using an experimental psychology approach and physiological and behavioral measurement methods. Our findings are applied to develop new techniques for assessing biological impact as well as to prepare new ergonomic guidelines, whose international standardization is also in progress.