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An Analytical Model for the Effects of the Spatial Resolution of Electrode Systems on the Spectrum of Cardiac Signals

hal.structure.identifierUniversidad Escuela Colombiana de Carreras Industriales [ECCI]
dc.contributor.authorBELTRÁN-MOLINA, Ferney
hal.structure.identifierQueen Mary University of London [QMUL]
dc.contributor.authorREQUENA-CARRIÓN, Jesús
hal.structure.identifierUniversidad Rey Juan Carlos [Madrid] [URJC]
dc.contributor.authorALONSO-ATIENZA, Felipe
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
dc.contributor.authorZEMZEMI, Nejib
dc.date.accessioned2024-04-04T03:07:51Z
dc.date.available2024-04-04T03:07:51Z
dc.date.issued2017-08-31
dc.identifier.issn2169-3536
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/193481
dc.description.abstractEnIt has been suggested that the spatiotemporal characteristics of complex cardiac arrhythmias can be extracted from the spectrum of cardiac signals. However, the analysis of simple bioelectric models indicates that the spectrum of cardiac signals can be affected by the spatial resolution of the electrode system. In this study, we derive exact measurement transfer functions relating the spectrum of cardiac signals to the spatiotemporal dynamics of cardiac sources and estimate their bandwidths. The analysis of the measurement transfer bandwidths for dynamics with different degrees of spatiotemporal correlation shows that as the spatial resolution decreases, the bandwidth of the measurement transfer function decreases until it reaches a constant value. Moreover, this transition from decreasing to constant values is determined by the degree of spatiotemporal correlation of the underlying cardiac source. Motivated by our analytical results, we investigate in a realistic computer simulation environment the impact of additive noise on the accuracy of body-surface dominant frequency (DF) maps. Our simulation results show that meaningful DF values are obtained on those locations where the analytical measurement transfer bandwidth is wide. These findings suggest that the accuracy of body-surface DF maps can be limited by the low spatial resolution of body-surface electrode systems.
dc.language.isoen
dc.publisherIEEE
dc.subject.endominant frequency
dc.subject.enCardiac arrhythmias
dc.subject.enspatial resolution
dc.subject.enbio-electric model
dc.subject.enspatiotemporal dynamics
dc.title.enAn Analytical Model for the Effects of the Spatial Resolution of Electrode Systems on the Spectrum of Cardiac Signals
dc.typeArticle de revue
dc.identifier.doi10.1109/ACCESS.2017.2747632
dc.subject.halInformatique [cs]/Modélisation et simulation
bordeaux.journalIEEE Access
bordeaux.page18488-18497
bordeaux.volume5
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01655418
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01655418v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=IEEE%20Access&rft.date=2017-08-31&rft.volume=5&rft.spage=18488-18497&rft.epage=18488-18497&rft.eissn=2169-3536&rft.issn=2169-3536&rft.au=BELTR%C3%81N-MOLINA,%20Ferney&REQUENA-CARRI%C3%93N,%20Jes%C3%BAs&ALONSO-ATIENZA,%20Felipe&ZEMZEMI,%20Nejib&rft.genre=article


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