Fig. 2

Filtered COP and COM time series (left) and stimulation output (right) for ellipse and bullseye VFBT exercises using different inputs: filtered COP (black), COM from the Kinect v2 depth camera (red), and COP from the pressure mat (blue). The horizontal lines (dark grey) on the stimulation output (right) represent the participant’s motor threshold and maximum tolerable stimulation intensity. Stimulation outputs are shown for the left and right plantarflexors (LPF and RPF) as well as the left and right dorsiflexors (LDF and RDF)