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    Nonlinear chaotic component extraction for postural stability analysis

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    Authors
    Snoussi, Hichem
    Hewson, David
    Duchêne, Jacques
    Issue Date
    2009-11-13
    Subjects
    chaos theory
    stability analysis
    elderly
    force
    postural stability
    
    Metadata
    Show full item record
    Abstract
    This paper proposes a nonlinear analysis of the human postural steadiness system. The analyzed signal is the displacement of the centre of pressure (COP) collected from a force plate used for measuring postural sway. Instead of analyzing the classical nonlinear parameters on the whole signal, the proposed method consists of analyzing the nonlinear dynamics of the intrinsic mode functions (IMF) of the COP signal. Based on the computation of the IMFs Lyapunov exponents, it is shown that pre-processing the COP signal with the Empirical Mode Decomposition allows an efficient extraction of its chaotic component.
    Citation
    Snoussi H, Hewson D, Duchene J (2009) 'Nonlinear chaotic component extraction for postural stability analysis', 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Minneapolis, IEEE.
    Publisher
    IEEE
    Journal
    Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
    URI
    http://hdl.handle.net/10547/623466
    DOI
    10.1109/IEMBS.2009.5335020
    PubMed ID
    19965106
    Additional Links
    https://ieeexplore.ieee.org/document/5335020
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ISSN
    1557-170X
    ae974a485f413a2113503eed53cd6c53
    10.1109/IEMBS.2009.5335020
    Scopus Count
    Collections
    Health

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