Figure 2.

Experimental design: (a) Types of therapeutic interventions where height of each shape represents relative magnitude of intervention. (b) Therapy interventions that were applied in each trial. Trial 3 and 4 both used two asymmetric 2:1 (blue) therapy interventions. In order to test the effect of the error augmentation mechanism, SBT and ARAS were once applied congruently (trial 3) and once incongruently (trial 4). (c) Timeline: duration of each section in the experiments. Yellow rectangular shapes show the approximate location of time windows used for analysis. Each window includes 25 left and 25 right steps. The time windows are located after the first 10 steps or before the last 10 steps of each phase. BL baseline, EA early adaptation, LA late adaptation, EP early post-adaptation, LP late post-adaptation.