A Time-Varying Factors Model for Interpreting Visually Induced Motion Sickness

For interpreting the process of visually induced motion sickness, we propose a time-varying factors model that consists of trigger and accumulation factors with different time-scales. As validation experiments, fifteen subjects viewed a 2-min-long first-person-view video image session five times (total 10-min) continuously. Measured biosignals were the RR interval, respiration, and blood pressure time-series to estimate the low-frequency (LF) and high-frequency (HF) power components. Then we determined the trigger points and the behavior of LF/HF. The results showed that time-distribution of trigger points showed the peak in the session and in trun the LF/HF, as the accumulation effect, increased in relation to the portions where the trigger points concentrated.