title: Constrained temporal extraction of the atrial rhythm in Atrial Fibrillation episodes.
abstract: The extraction of the Atrial Activity from the Ventricular Activity in Atrial Fibrillation episodes is a must for clinical analysis. We follow the semi Blind Source Extraction S-BSE approach to solve the problem. The proposed algorithm modifies the BSE contrast function to satisfy the prior knowledge about the spectral content of the atrial signal. The introduction of this prior allows obtaining a new algorithm with the following advantages: it allows the extraction of only the atrial component and it improves the quality of the recovered atrial signal in terms of spectral concentration as we show in the results.
authors.affiliation: Department of Communications of the Universidad Politecnica Valencia, Spain. rllinares@dcom.upv.es
authors.forename: R
authors.initials: R
authors.lastname: Llinares
authors.forename: J
authors.initials: J
authors.lastname: Igual
authors.forename: A
authors.initials: A
authors.lastname: Salazar
authors.forename: L
authors.initials: L
authors.lastname: Vergara
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D001281:Atrial Fibrillation / Q000175:diagnosis*; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D006801:Humans; D009991:Oscillometry / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity