Estimation of Driver's State by Recognaizing Vestibulo-ocular Reflex - Model Based Approach for Evaluating Auditory Destractions

摘要

Vestibule-ocular reflex is known as one of involuntary motions of eyeball. The action has been mainly investigated from the viewpoint of compensation function for stabilizing the gaze against disturbance on the cranium position. However, mental workloads may affect on vestibule-ocular reflex. The related research of the effect of mental workloads on vestibule-ocular reflex has not been appeared yet. First, we have conducted the identification of vestibulo-ocular reflex for a particular person based on the mathematical model proposed by Haslwanter et. al. It is confirmed with experiments that the identified model for each person predicts the actual ocular movements well. Second, we have tested the capability of the identified model with manual tacking tasks. During the tracking task, aural subtasks, which are mental arithmetic of two digit addition, were continuously given to evaluate the error form the identified model which predicts the subject response without the subtask. The results show that mental workloads affect vestibulo-ocular reflex and can be evaluated by the identified model.