Hilbert-Huang transformation: application to postural stability analysis

Hassan Amoud; Hichem Snoussi; David J Hewson; Jacques Duchêne

doi:10.1109/IEMBS.2007.4352602

Hilbert-Huang transformation: application to postural stability analysis

Annu Int Conf IEEE Eng Med Biol Soc. 2007:2007:1562-5. doi: 10.1109/IEMBS.2007.4352602.

Authors

Hassan Amoud¹, Hichem Snoussi, David J Hewson, Jacques Duchêne

Affiliation

¹ Institut Charles Delaunay, FRE CNRS 2848, Université de technologie de Troyes (UTT), Troyes, France. hassan.amoud@utt.fr

PMID: 18002268
DOI: 10.1109/IEMBS.2007.4352602

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.

Publication types

Evaluation Study
Research Support, Non-U.S. Gov't

MeSH terms

Adult
Algorithms*
Diagnosis, Computer-Assisted / methods*
Female
Humans
Male
Manometry / methods*
Physical Examination / methods*
Postural Balance / physiology*
Posture / physiology*
Reproducibility of Results
Sensitivity and Specificity