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Hilbert-Huang transformation: application to postural stability analysis

  • David Hewson
  • , Hassan Amoud
  • , Hichem Snoussi
  • , Jacques Duchêne

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Citations (Scopus)

Abstract

The aim objective of this paper is the analysis of the Centre Of Pressure (COP) time series by the means of the Hilbert Huang Transformation (HHT). The HHT consists of extracting the Intrinsic Mode Functions (IMFs) from an Empirical Mode Decomposition (EMD), and then applying the Hilbert Transformation on the IMFs. The trace of the HHT in the complex plane has a circular form, with each IMF having its own rotation frequency. The area of the circle represents a possible indicator of the postural stability status of the subjects. Experimental results show the effectiveness of the area of this circle in order to identify the post-vibratory effects on standing posture in healthy adult subjects.
Original languageEnglish
Title of host publicationnan
PublisherInstitute of Electrical and Electronics Engineers Inc.
DOIs
Publication statusPublished - 22 Oct 2007
Event29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Lyon
Duration: 22 Aug 200726 Aug 2007

Conference

Conference29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityLyon
Period22/08/0726/08/07
Other29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (22/08/2007-26/08/2007, Lyon)

Keywords

  • Hilbert-Huang transformation
  • displacement measurement
  • frequency
  • postural stability
  • stability analysis

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