Trajectory formation and speed-accuracy trade-off in aiming movements |
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Institution: | 1. Department of Psychology, Universidad Loyola Andalucía, Spain;2. Prevention and Health Promotion Research Network (redIAPP), ISCIII, Spain;3. Research Unit of the Health District of Primary Care Málaga-Guadalhorce, Spain;4. Instituto de Investigación Biomédica de Málaga (IBIMA) Málaga, Spain;5. El Palo Health Centre, Andalusian Health Service (SAS), Málaga, Spain;6. Department of Public Health and Psychiatry, University of Málaga (UMA), Spain;7. Department of Clinical, Neuro and Development Psychology, Section of Clinical Psychology, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands;8. Amsterdam Public Health Research Institute, Amsterdam, the Netherlands;9. Institute of Biomedical Research of Salamanca (IBSAL), Primary Health Care Research Unit, La Alamedilla Health Center, Health Service of Castilla y León (SACyL), Spain;1. Department of Psychology, The Chinese University of Hong Kong, Hong Kong;2. Western Sydney University, NICM Heath Research Institute, Westmead, NSW, Australia;3. Professorial Unit, The Melbourne Clinic, Department of Psychiatry, The University of Melbourne, Australia;4. Department of Psychiatry, The University of Hong Kong, Hong Kong;5. School of Nursing, The Hong Kong Polytechnic University, Hong Kong;1. Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA;2. Division of Cardiology, Mount Sinai Morningside Hospital, Mount Sinai Heart, Icahn School of Medicine at Mount Sinai, New York, NY, USA |
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Abstract: | 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. |
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