Title :
Adaptive coherence estimation on brief intracardiac recordings
Author :
Sahakian, Alan ; Ropella, Kristina ; Baerman, Jeffrey ; Swiryn, Steven
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA
Abstract :
Adaptive techniques are considered for the estimation of the magnitude-squared coherence spectrum of two simultaneous intracardiac signals. Estimators based on single- and multiple-pass algorithms are proposed. Adaptive estimates of the magnitude-squared coherence spectrum are shown to effectively separate fibrillatory from several nonfibrillatory rhythms on the basis of 5 s of data. The significance of this work for sophisticated antitachyarrhythmia devices is indicated
Keywords :
electrocardiography; 5 s; adaptive coherence estimation; brief intracardiac recordings; fibrillatory rhythms; magnitude-squared coherence spectrum; multiple-pass algorithm; nonfibrillatory rhythms; single-pass algorithm; sophisticated antitachyarrhythmia devices; Adaptive estimation; Convergence; Engineering in medicine and biology; Fibrillation; Filters; Frequency estimation; Frequency measurement; Rhythm; Signal processing algorithms; Yield estimation;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95693
