In immersive VR systems, there is a problem that makes it difficult to perform operations when the dimensions differ. We propose "Body schema calibration" which changes the body diagram that conforms to the body in the actual space to that of the body in the virtual space, based on the assumption that the problem is the divergence of the body schema, which is a model in the brain that realizes body localization.

　A body schema is a brain function that outputs information about the state of the body (shape, dimensions, position, posture, etc.) through sensory inputs such as sight, hearing, and somatosensory sensations (cutaneous and proprioceptive). This information that rises to consciousness is called body image. Based on the body schema, somatosensory inputs, such as cutaneous and proprioceptive sensations, evoke a body image. Therefore, the position and posture of each body part can be grasped even without visual information.

　In our laboratory, we are researching with the goal of "body schema calibration" of the entire body by capturing the body in actual space and performing specific tasks in a virtual area that mimics the real space using a motion capture system. Currently, we are working on body schema calibration for the lower limbs, as we have achieved satisfactory results for the upper limbs.