The Frequency Changes in Electrograms during Ischemia Experiments – Analysis by Matching Pursuit Decomposition

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Authors

KOLÁŘOVÁ Jana DOLEŽAL Petr NOVÁKOVÁ Marie PROVAZNÍK Ivo

Year of publication 2015
Type Article in Proceedings
Conference Computing in Cardiology 2015
MU Faculty or unit

Faculty of Medicine

Citation
Field Physiology
Keywords frequency components; algorithms Matching Pursuit; Wigner-Ville Distribution
Description The aim of this study was to analyse frequency components in electrograms (EGs) recorded from surface of isolated guinea pig hearts perfused according to Langendorff. Time-frequency analysis is based on algorithms Matching Pursuit and Wigner-Ville Distribution and its combination showing the energy density of the signal. The presented algorithms were tested on a set of electrograms, recorded during ischemia followed by reperfusion. The frequency components changed markedly during global ischemia experiments.
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