Discrete and rhythmic movements - Just a bifurcation apart?

Andreas Daffertshofer, Bart Van Veen, Robert Ton, Raoul Huys

    Research output: Contribution to JournalArticleAcademicpeer-review


    Whether discrete and rhythmic movements result from the same or from separate dynamical structures is yet unclear. We discuss a robust albeit computationally demanding approach to tackle this issue. Our approach capitalizes on conventional time-delay embedding techniques followed by fitting coefficients of a Kramers-Moyal expansion to the so-defined multivariate data. This procedure allows for identifying the generating dynamical systems on basis of possibly non-stationary and noisy signals. We apply this to data from recent experiments in which movement tempo was systematically modified to pinpoint spontaneous switches from discrete to rhythmic movement and back again. It appears that both movement archetypes live in the same phase space but in distinct dynamical regimes.

    Original languageEnglish
    Article number6974005
    Pages (from-to)778-783
    Number of pages6
    JournalConference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
    Issue numberJanuary
    Publication statusPublished - 2014


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