Influence of intermittency and synergy on grasping.
The commentary firstly supports Smeets and Brenner in their choice of a kinematic trajectory, submitting that the challenge posed by the rival torque-change formulation is resolved by consideration of intermittency in human movement control. Second, it examines the choice of optimization criterion for trajectory planning, arguing in favor of minimum acceleration rather than minimum jerk. Third, using the notion of optimized trajectories in task-dependent coordinate space together with synergy generation, it suggests a formulation that reduces the processing load entailed in Smeets and Brenner's proposal of individual trajectories for each digit.
Neuroengineering Lab, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052, Australia.
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Neilson
D000054:Acceleration; D001696:Biomechanical Phenomena; D004526:Efficiency; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D009068:Movement / Q000502:physiology*; D009949:Orientation / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D014836:Volition / Q000502:physiology