ベクション感覚と平衡感覚刺激並存下の音像定位(<特集>VR心理学5〜脳機能計測とVR〜)

概要

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In this study, we investigated the effect of self-motion perception induced by visual stimuli, i.e. vection and/or vestibular information on sound localization. To make an observer perceive vection we presented random dots which were moving laterally on a wide screen. To present vestibular stimuli we used a three-degree of freedom (3 DOF) motion platform which inclines right or left. Sound stimuli were presented behind the screen when an observer perceived self-motion induced by visual stimuli and/or the platform. The observer's task was to point the position of the sound image on the screen. Experimental results showed that perceived sound position shifted to the opposite direction of perceived self-motion induced by visual information, regardless of the direction of vestibular information. Moreover, this tendency was observed only one side of median sagittal plane; the side whose direction was same as that of the movement of visual information. The result indicates that the auditory spatial perception is changed by the self-motion due to the coexistence of visually induced self-motion and vestibular information.
日本バーチャルリアリティ学会の論文
2013-03-31