Analysis of center of pressure signals using empirical mode decomposition and Fourier-Bessel expansion
Issue Date
2008-12-31Subjects
pressure signalsempirical mode decomposition
Fourier-Bessel expansion
centre of pressure
intrinsic mode functions
vibration frequencies
Metadata
Show full item recordAbstract
Center of pressure (COP) measurements are often used to identify balance problems. A new method for analysis of COP signals using empirical mode decomposition (EMD) and Fourier-Bessel (FB) expansion is proposed in this paper. The EMD decomposes a COP signal into a finite set of band-limited signals termed intrinsic mode functions (IMFs), before FB expansion is applied on each IMF to compute mean frequency. The FB expansion based representation is suitable for use in non-stationary and very short duration signals. Seventeen subjects were tested under eyes open (EO) and eyes closed (EC) conditions, with different vibration frequencies applied for EC condition to further perturb sensory information. Mean frequency as calculated by FB expansion for the first three IMFs was able to distinguish between EO and EC conditions (p < 0.05), while only first IMF was able to detect a vibration effect.Citation
Pachori RB, Hewson DJ, Snoussi H, Duchene J (2008) 'Analysis of center of pressure signals using empirical mode decomposition and Fourier-Bessel expansion', TENCON 2008 - 2008 IEEE Region 10 Conference - Hyderabad, IEEE.Publisher
IEEEAdditional Links
https://ieeexplore.ieee.org/document/4766596Type
Conference papers, meetings and proceedingsLanguage
enISSN
2159-3442ae974a485f413a2113503eed53cd6c53
10.1109/TENCON.2008.4766596