caa a22 4500 465783015 CHVBK 20180323112000.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02441672 doi (NATIONALLICENCE)springer-10.1007/BF02441672 Behaviour space of a stretch reflex model and its implications for the neural control of voluntary movement [Elektronische Daten] [C. Ramos, S. Hacisalihzade, L. Stark] A nonlinear model for the stretch reflex has recently been used to study the interactions between voluntary and reflex controls during fast, targeted movements. The present study explores the topography of a ‘behaviour space' generated by computer simulations of this model under various combinations of values for the gain parameters and time constants in the model's feedback loops. In general, we define a behaviour space to be any set of behavioural characteristics of the simulated movement, such as movement time, peak acceleration or peak velocity. The mathematical model can therefore be viewed as an M×N dimensional map from its parameter space N to a behaviour space M. Here, a one-dimensional behaviour space is explored. This provides a method for quantitatively comparing the different control strategies that might be employed by the nervous system for integrating reflex and descending signals during fast, voluntary movements. The results indicate that an optimal strategy will employ proprioceptive feedback as a means of fine-tuning the braking and clamping activities of fast, goal-directed movements and that descending signals are primarily important for initiating the movement and for controlling reciprocal patterns of muscle activity during the end phase of the movement. IFMBE, 1990 Computer simulations nationallicence Control strategies nationallicence Modelling nationallicence Motor behaviour nationallicence Stretch reflex nationallicence Voluntary movements nationallicence Ramos C. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut Hacisalihzade S. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut Stark L. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/1(1990-01-01), 15-23 0140-0118 28:1<15 1990 28 11517 https://doi.org/10.1007/BF02441672 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02441672 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ramos C. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Hacisalihzade S. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Stark L. Neurology Unit, School of Optometry, University of California, 483 Minor Hall, 94720, Berkeley, CA, USA aut NATIONALLICENCE 773 0- Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/1(1990-01-01), 15-23 0140-0118 28:1<15 1990 28 11517 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer