Figure 5.

Effect of stance width on GVS-evoked force response at −45° head angle. Polarity-collapsed data are from experiment 1. A, B, Group mean GVS-evoked X force (A) and Y force (B) time series. Time is relative to GVS onset. C, D, Group mean response directions (C) and magnitudes (D) of force measured at 0.4 s. Error bars represent 95% confidence intervals of the mean. The shaded segment in C was formed from 95% confidence intervals of expected directions based solely on measured head yaw angles.