Examples of end-point kinematic and EMG signals collected during one trial from one pathological subject (P1). Top panel: endpoint trajectories are shown for each movement direction (columns). Central panels: EMG signals are shown for each muscle (rows) and movement direction (columns); data were full wave rectified and normalized with respect to the maximum of the specific muscle over all conditions, filtered (see Methods section), and integrated over 10 ms intervals; the gray area represents the time window used for the present analysis; muscles abbreviation are defined in the Methods section. Bottom panel: tangential velocity profiles are shown for each movement direction (columns). Data are aligned to the movement onset.