title: Time-frequency analysis of the endocavitarian signal in paroxysmal atrial fibrillation.
abstract: We apply the time-frequency analysis to the endocavitarian signal of patients suffering from paroxysmal atrial fibrillation. The time-frequency spectrum reveals the components of the endocavitarian signal. These components are located in the regions of the time-frequency domain that differ for in-rhythm and in-atrial fibrillation signals. By using experimental data, we perform a statistical study of these regions, and we obtain their average value. The difference in the shape of these regions is caused by the re-entry circuits that characterize atrial fibrillation. We propose a propagation model for atrial fibrillation based on the re-entry circuits, which explains the shape of the time-frequency spectrum.
authors.affiliation: DAUIN, Politecnico di Torino, Torino, Italy. guido.pagana@polito.it
authors.forename: Guido
authors.initials: G
authors.lastname: Pagana
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Galleani
authors.forename: Stefano
authors.initials: S
authors.lastname: Gross
authors.forename: Massimo Ruo
authors.initials: MR
authors.lastname: Roch
authors.forename: Erica
authors.initials: E
authors.lastname: Pastore
authors.forename: Mauro
authors.initials: M
authors.lastname: Poggio
authors.forename: Greta
authors.initials: G
authors.lastname: Quaranta
mesh_terms: D001281:Atrial Fibrillation / Q000503:physiopathology*; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D015233:Models, Statistical; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors