Figure 2. Averaged group responses of COP shift to visual stimulation.

(A) Scene moving forward from the subject. (B) Scene moving backwards from the subject. On the vertical axis, values above and below zero indicate the subject moving on AP axis forward and backward. (C) Scene rotating to the left. (D) Scene rotating to the right. On the vertical axis, values above and below zero indicate the subject is moving on ML axis to the right and left, respectively.