Fig. 1
From: Visual oscillation effects on dynamic balance control in people with multiple sclerosis
Overview of the experimental setup. A The virtual environment presented during the experiment. B Object perturbation, in which the tree swayed by rotating from the base. C Scene perturbation, in which the entire virtual environment translated left and right. D The profile of the perturbation using the low frequency pairing (left) and the high frequency pairing (right) of two sinusoids