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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Metadaten
Author details:Ralf EngbertORCiDGND, Christian Scheffczyk, Ralf-Thomas Krampe, Mikhael Rosenblum, Jürgen KurthsORCiDGND, Reinhold KlieglORCiDGND
URN:urn:nbn:de:kobv:517-opus-14380
Publication series (Volume number):NLD Preprints (41)
Publication type:Preprint
Language:English
Publication year:1997
Publishing institution:Universität Potsdam
Release date:2007/07/04
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Zentrale und wissenschaftliche Einrichtungen / Interdisziplinäres Zentrum für Dynamik komplexer Systeme
Humanwissenschaftliche Fakultät / Strukturbereich Kognitionswissenschaften / Department Psychologie
DDC classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Institution name at the time of the publication:Humanwissenschaftliche Fakultät / Institut für Psychologie
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