WM Keck Science
Experiments were performed in normal and Parkinsonian subjects who were asked to maintain a constant finger position using time-delayed visual feedback. The finger position showed complex dynamics, with characteristic differences between normal and Parkinosonian subjects. Here we discuss some of the theoretical issues that must be resolved in order to understand the mechanisms that underlie the generation of these complex signals.
Beuter, A., J. Milton, C. Labrie, L. Glass. "Complex Motor Dynamics and Control in Multilooped Negative Feedback Systems." Conference Proceedings for the IEEE International Conference on Systems, Man and Cybernetics, vol. 3 (14-17 November 1989): 899-902. DOI: 10.1109/ICSMC.1989.71426
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Previously linked to as: http://ccdl.libraries.claremont.edu/u?/irw,227
Source: Published conference presentation, posted with permission.
This article can also be found at http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=2458&arnumber=71426&index=186