Coordinates for trajectory formation of human multi-joint arm movement

Abstract

Trajectory formation during human multi-joint arm movements was investigated. Experiments showed the trajectory of unconstrained sequential movements (elliptical drawing movements) in a horizontal plane is heavily influenced by differences in body coordinates. Therefore it is suggested that trajectory planning in such movements is not solely based on the task-oriented visual coordinates but dependent on complicated dynamics within the musculoskeletal system of the human arm.<>