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.
Bootsma
R J
RJ
Mouvement et perception, UMR 6559, université de la Méditerranée et CNRS, Marseille, France. bootsma@laps.univ-mrs.fr
Mottet
D
D
Zaal
F T
FT
D055592:Biophysical Phenomena; D001703:Biophysics; D006801:Humans; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological; D009068:Movement / Q000502:physiology*