Nonlinear chaotic component extraction for postural stability analysis
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
IEEEPubMed ID
19965106Additional Links
https://ieeexplore.ieee.org/document/5335020Type
Conference papers, meetings and proceedingsLanguage
enISSN
1557-170Xae974a485f413a2113503eed53cd6c53
10.1109/IEMBS.2009.5335020