Nonlinear chaotic component extraction for postural stability analysis

David Hewson
,
Hichem Snoussi
,
Jacques Duchêne

Université de technologie de Troyes

Research Output:

Chapter in Book/Report/Conference proceeding

Conference contribution

Peer-review

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.

Publication Information

Output type

Research Output:

Chapter in Book/Report/Conference proceeding

Conference contribution

Peer-review

Original language

English

Publication milestones

Published - 13/11/2009

Publication status

Published - 13/11/2009

Publisher

Institute of Electrical and Electronics Engineers Inc., United States

ISBN (Electronic)

9781424432967

Publication IDs

handle.net: 10547/623466
Scopus: 77951018931

Host publication title

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Access to documents

10.1109/IEMBS.2009.5335020

Handle.net

Persistent link

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Related Event

Title

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Description

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (03/09/2009-06/09/2009, Minneapolis)

Event type

Conference

Date

03/09/2009 - 06/09/2009

Location

Minneapolis