生体指標を用いたリーンステアビークルのユーザビリティに関する研究

抄録

In this paper, we reviewed the usability of the narrow track vehicle with a leaning mechanism by using physiological indices. There are many factors in usability, but among them, we focused on the user's satisfaction with the vehicle. An experiment was conducted on the hypothesis that if a subject's satisfaction with the vehicle is reduced by a lean actuator’s behavior, the level of physiological indices indicating the subject’s stress will change in the direction that stress increases. Electrocardiogram (ECG) and Electroencephalography (EEG) were used to assess the satisfaction. From the ECG, the balance between the subject’s sympathetic nerves and the parasympathetic nerves was evaluated using the index called LF/HF. From the EEG, the subject’s psychological stress was assessed by using the ratio of alpha and beta bands. The result of ECG was based on the hypothesis, but for the result of EEG, it was not possible to identify the tendency of the subject to increase their psychological stress by the lean actuator’s behavior. Therefore, it was not possible to estimate the satisfaction with the methods used in this study. We thought that it is necessary to estimate the satisfaction by including subjective assessment while using other methods such as frontal brain asymmetry.