FIGURE 4.

Changes in the symmetry of gaitline length across training phases in experiment 2 (with tDCS): Training on the split-belt treadmill was performed at T0, T1 (24 h after the first trial), and T2 (72 h after the first trial). Cerebellar anodal (real) or sham tDCS was applied ipsilateral to the fast leg immediately after the adaptation phase at T0. The blue color represents data from HC, data obtained from PwMS are red-colored. (A,E) Average gaitline length symmetry in the early adaptation obtained from the first six strides in the adaptation phase for HC and PwMS. (B,F) Average gaitline length symmetry during mid-adaptation obtained from the first 50 strides following early adaptation in the adaptation phase. (C,G) Average gaitline length symmetry during late adaptation obtained from the last six strides in the adaptation phase. (D,H) Average gaitline length symmetry during early postadaptation obtained from the first six strides in the postadaptation phase of the training, only at T1 and T2. Error bars represent the standard error of means (N_HC–sham = 9, N_HC–real = 11, N_PwMS–sham = 15, N_PwMS–real = 15).