Title :
Median frequency and coherence measures of atrial and ventricular fibrillation
Author :
Sahakian, Alan ; Ropella, Kristina ; Baerman, Jeffrey ; Swiryn, Steven
Author_Institution :
Dept. of Biomed. & Electr. Eng., Northwestern Univ., Evanston, IL, USA
Abstract :
Fibrillatory rhythms are poorly characterized by traditional time-domain measures, such as rate. The authors describe two measures not commonly applied in intracardiac signal processing; the median frequency (MF) in the 2 to 9 Hz region of the power spectrum, and the magnitude-squared coherence (MSC) function. These two measures are formally defined. The MF is a robust measure of drug-induced changes in atrial fibrillation, and the MSC is a measure of the degree of organization of atrial and ventricular cardiac rhythms.<>
Keywords :
electrocardiography; signal processing; 2 to 9 Hz; atrial fibrillation; coherence; drug-induced changes; fibrillatory rhythms; intracardiac signal processing; median frequency; power spectrum; ventricular fibrillation;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94381
