Figure 3

Characteristics of midfrontal GED component data. (A) Participant-specific scalp topographies of the spatial filter with the largest eigenvalue and a midfrontal topography (normalized scale). The group average (Group avg.) scalp topography is presented in the bottom right figure. (B) Group averaged time–frequency results. Top row illustrates forward and backward time–frequency analysis of perturbation time locked EEG data, with the vertical solid line indicating perturbation onset. The vertical dashed lines indicate the start of platform constant velocity (0.3 s) and the end of the constant velocity phase (0.8 s). Bottom row illustrates time–frequency analysis of foot strike event time locked EEG data. The black vertical line at 0 s indicates the moment of foot strike and the vertical red line represents the average end of platform motion relative to foot strike in the forward or backward direction. Figures were created with the EEGlab toolbox.