Trajectory formation and speed-accuracy trade-off in aiming movements.
The trade-off between speed and accuracy and the patterning of movement kinematics have been central issues for theories of human movement for almost a century. In the present contribution experimentally obtained kinematics of reciprocal aiming movements, performed under different task conditions, are modelled as resulting from a single non-linear dynamical system whose parameters vary so as to respond to the task demands. Providing a unified account of speed-accuracy trade-off and trajectory formation phenomena, the model offers a theoretical framework in which both discrete and continuous movements, performed along one or more dimensions can be understood.
Mouvement et perception, UMR 6559, université de la Méditerranée et CNRS, Marseille, France. bootsma@laps.univ-mrs.fr
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Bootsma
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Mottet
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Zaal
D055592:Biophysical Phenomena; D001703:Biophysics; D006801:Humans; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological; D009068:Movement / Q000502:physiology*