Fig. 3

Time-course change in mean soleus activity for the more-affected limb during biofeedback walking. The median response to sensorimotor (SM) audiovisual (AV), and combined (AV + SM) biofeedback before (top) and after (middle) four acclimation sessions with AV + SM biofeedback and after a two-week follow-up (bottom) is displayed. All data has been normalized to the first baseline phase performed at each visit and averaged into 5-stride bins. During baseline and washout phases, the biofeedback systems were turned off