Fig. 3

A Hand force magnitudes as a function of time during transitions between targets as indicated by the red trajectory in Fig. 1 (panel B) for a representative HS subject (left) and NI control subject (right) at three transport speeds (90˚: thin trace; 30˚: medium-weight trace; 6˚: heavy trace). Markers (yellow +) indicate the time of End Of Transition (EOT). Markers (red hashes) indicate EOT + 20 s. Vertical scale bar corresponds to a measured hand force of 20N while the horizontal dashed line indicates 0 measured hand force. The horizontal scale corresponds to 10 s. B Force profiles plotted with respect to steady-state values (EOT + 20 s) and aligned in time with respect to EOT. Here, the vertical scale bar corresponds to a change in measured hand force of 20N relative to steady-state