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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Contributor : Olivier Meste <>
Submitted on : Monday, January 26, 2009 - 9:54:30 PM
Last modification on : Wednesday, January 31, 2018 - 10:24:04 AM

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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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