Body Schema Calibration for VR: Research on the Characteristics in Wide Range Included Direction of Contraction Regarding Forearm

Abstract

It is difficult for humans to manipulate their virtual body in the immersive virtual system when its size is different from the real body. The authors assumed that this problem is caused by misfit of the body schema and have been working on the research of body schema calibration, which is the method to update the body schema to fit the virtual body. However, in the previous research, the survey of the basic characteristics of updating body schema has been limited to a narrow range in the extension direction. Therefore, in this paper, we have dealt with updating body schema in wider range in both extension and contraction direction, in order to clarify not only the characteristics of updating in the contraction direction but the limits of update. The results showed symmetry characteristics of body schema update in both directions, while the update effect deteriorated in case of extreme changes.