Fig. 7.

Perturbation-evoked head and sacrum motion. Average mediolateral motion capture marker trajectories are shown from the sacrum (top) and head (bottom) during training for virtual reality with perturbations (blue), virtual reality without perturbations (red), and unaltered view (orange), time-locked to the perturbation onset (n = 10 for each group). In the case of the virtual reality without perturbations group, a pseudo-perturbation of 0° was performed. Motion capture trajectories were baseline subtracted to the 1.5 s preceding perturbation onset.