Simulation studies on the control of posture and movement in a multi-jointed limb |
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| Authors: | F Lacquaniti J F Soechting |
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| Institution: | (1) Laboratory of Neurophysiology, University of Minnesota, 55455 Minneapolis, MN, USA;(2) Present address: Istituto di Fisiologia dei Centri Nervosi, Milano, Italy;(3) Dept. of Physiology, University of Minnesota, 5-257 Millard Hall, 55455 Minneapolis, MN, USA |
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| Abstract: | Simulation studies were performed to evaluate the effectiveness of different control schemes in stabilizing a multi-jointed limb (human arm) in response to force perturbations. The mechanical properties of the arm were modeled as a linear visco-elastic system and the effectiveness of negative feedback of angular position and torque was evaluated. The effectiveness of a given amount of position feedback depended strongly on the initial position of the arm and on the perturbation, while torque feedback was much more consistently effective in damping the motion of the limb. |
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