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Tempo-induced transitions in polyrhythmic hand movements

  • We investigate the cognitive control in polyrhythmic hand movements as a model paradigm for bimanual coordination. Using a symbolic coding of the recorded time series, we demonstrate the existence of qualitative transitions induced by experimental manipulation of the tempo. A nonlinear model with delayed feedback control is proposed, which accounts for these dynamical transitions in terms of bifurcations resulting from variation of the external control parameter. Furthermore, it is shown that transitions can also be observed due to fluctuations in the timing control level. We conclude that the complexity of coordinated bimanual movements results from interactions between nonlinear control mechanisms with delayed feedback and stochastic timing components.

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Author:Christian Scheffczyk, Ralf-Thomas Krampe, Ralf EngbertORCiDGND, Michael G. Rosenblum, Jürgen KurthsORCiDGND, Reinhold KlieglORCiDGND
Document Type:Article
Year of first Publication:1997
Year of Completion:1997
Release Date:2017/03/24
Source:Physical review / E. - 56 (1997), 5, S. 5823 - 5833
Organizational units:Humanwissenschaftliche Fakultät / Institut für Psychologie
Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Institution name at the time of publication:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik