Abstract
We decide and execute our action from many types of environmental information in our daily lives even if we are not conscious of being guided. Galvanic Vestibular Stimulation (GVS) is known as a method of giving influence on sense of equilibrium. The vestibular system is stimulated by a weak current through an electrode placed on the mas-toid behind the ear. In this paper, we had a motion guidance experiment of walking by using GVS to evaluate the effect. Next, we experimented on the behavioral decision process in human walking phase so that the GVS might influence it more effectively. We make an experiment to judge the avoidance direction by watching the masking movie of oncoming person's body part. From this result, the avoidance judgment is possible because the traveling direction can be controlled by the leg when the leg is lifting and landing. It was clarified that oncoming person's walking phase is important in the behavioral decision in collision avoidance. So we propose the behavioral decision model based at the walking phase.
