Ventricular late potentials characterization in time-frequency domain by means of a wavelet transform.

Abstract : The main transforms of Cohen's class allow signal representation simultaneously in time and frequency domains. Wavelet transforms make it possible to link the temporal window width to the analyzing frequency and leads to a "modified wavelet transform" which improves resolution both in time and frequency. A simulation study illustrates the artifacts of every time-frequency representation (TFR) on pure sinusoids and gives performance evaluation of the different methods when searching a sinusoid embedded in a QRS complex. Analyses of real signals from healthy and pathological subjects confirm the simulation results and complete the characterization of ventricular late potentials (VLP) yet detected by signal averaging.
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IEEE Transactions on Biomedical Engineering, Institute of Electrical and Electronics Engineers, 1994, 41 (7), pp.625-34. 〈10.1109/10.301729〉
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Contributeur : Olivier Meste <>
Soumis le : lundi 26 janvier 2009 - 21:54:30
Dernière modification le : jeudi 4 mars 2010 - 11:44:21

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Olivier Meste, Hervé Rix, P. Caminal, N. V. Thakor. Ventricular late potentials characterization in time-frequency domain by means of a wavelet transform.. IEEE Transactions on Biomedical Engineering, Institute of Electrical and Electronics Engineers, 1994, 41 (7), pp.625-34. 〈10.1109/10.301729〉. 〈hal-00356221〉

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