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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: J Appl Biomech. 2011 Oct 4;28(3):304–316. doi: 10.1123/jab.28.3.304

Figure 1.

Figure 1

Assessment of motor performance. A) Illustration of the experimental set-up and a participant performing the reach-grasp-transport-release task. B) Example data from one trial. Vertical dashed lines demonstrate division of the task into movement phases. The reach phase began when hand velocity exceeded 5 mm/sec, the grasp phase began when grip force exceeded 5 grams, the transport phase began when the vertical position of the object increased by 3 mm, and the transport phase ended when the vertical position of the object returned to within 3 mm of its final resting position. Duration of the release phase was calculated as the difference in time between the end of transport, and the time when force on the object returned to within 5 grams of its baseline value.