視覚情報と体性感覚情報の不一致による迂回行動時の身体制御に用いられる視覚的手がかりの分離(<特集>知覚・認知・行為における多感覚統合)

抄録

To avoid obstacles, the brain may use optic flow for locomotor control or it may simply use the perceived direction of an obstacle. We tested these hypotheses in an immersive virtual environment using Warren et al.'s (2001) method where optic flow is displaced from the direction of locomotion provided by somatosensory information. To steer the body around a vertical axis, locomotor control depends on the optic flow with a focus of expansion (FOE) on the obstacle, suggesting that the brain uses optic flow to avoid an obstacle.