부산대학교 도서관

Many mathematical models have been proposed to represent the Vestibulo-Ocular Reflex (VOR) that occurs during human head movement. It is known that the accuracy of these conventional models decreases when humans take on additional mental tasks. On the other hand, the 6DOF-SVC model, a mathematical model of motion sickness caused by the vestibular sensory system, includes a sub-model block representing the prediction accuracy of their own body movement, which is thought to be affected by mental tasks. Therefore, we aimed to describe the influence of mental tasks on VOR, and proposed a new mathematical model of VOR that utilizes estimated body movement calculated by the 6DOF-SVC model for calculating VOR. First, simulation experiments that compared human sensation in the horizontal direction during off-centered rotation based on measurements obtained from subjects, demonstrated that the direction of the gravito-inertial acceleration (GIA) estimated by the proposed model was in accordance with its human sensation in the steady state. Second, a model evaluation experiment was conducted to compare the measured VOR with the estimated VOR. The result demonstrated that the accuracy of the proposed model is as high as that of the conventional model. This suggests that the proposed model successfully includes the effect of estimation of body movement without decreasing the accuracy of the model compared to the conventional model.