Quantitative Assessment of ADL: A Pilot Study of Upper Extremity Reaching Tasks

Figure 4

These three graphs show trajectories in three levels. (a) is in level one for natural movements without involuntary movements and jerks. (b) Trajectory is in the second level with two involuntary movements (with amplitudes of 0.225 and 0.25 meter) and jerks (with amplitudes of 0.025 and 0.0275 meter). (c) is in the third level with four involuntary movements (with amplitudes of 0.45, 0.5, 0.55, and 0.6 meter) and jerks (with amplitude of 0.05, 0.055, 0.06 and 0.065 meter). The red circles are examples of jerks in the second and third level.

(a)

(b)

(c)