Figure 4From: Validation of a mechanism to balance exercise difficulty in robot-assisted upper-extremity rehabilitation after strokeMovement Trajectories. (a) and (b) illustrate movement trajectories for the paretic and non-paretic arm of the same subject, respectively. One can clearly see the difference to the movements of the paretic arm being imprecise and uncontrolled compared to the ones of the non-paretic arm.Back to article page