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Asymptotic wave propagation in excitable media

hal.structure.identifierIHU-LIRYC
dc.contributor.authorBERNUS, Olivier
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
dc.contributor.authorVIGMOND, Edward
dc.date.accessioned2024-04-04T02:51:08Z
dc.date.available2024-04-04T02:51:08Z
dc.date.issued2015-07
dc.identifier.issn1539-3755
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/191969
dc.description.abstractEnWave shape and velocity are important issues in reaction-diffusion systems, and are often the result of competition in media with heterogeneous conduction properties. Asymptotic wave front propagation at maximal conduction velocity has been previously reported in the context of anisotropic cardiac tissue, but it is unknown whether this is a universal property of excitable tissues where conduction velocity can be locally modulated by mechanisms other than anisotropy. Here, we investigate the impact of conduction heterogeneities and boundary effects on wave propagation in excitable media. Following a theoretical analysis, we find that wave-front cusps occur where local velocity is reduced and that asymptotic wave fronts propagate at the maximal translational conduction velocity. Simulations performed in different reaction-diffusion systems, including cardiac tissue, confirm our theoretical findings. We conclude that this property can be found in a wide range of reaction-diffusion systems with excitable dynamics and that asymptotic wave-front shapes can be predicted.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.encardiomyopathies
dc.subject.encatheter ablation
dc.subject.enevoked potentials
dc.subject.enheart ventricles
dc.subject.entachycardia
dc.subject.enventricular
dc.title.enAsymptotic wave propagation in excitable media
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevE.92.010901
dc.subject.halSciences du Vivant [q-bio]/Médecine humaine et pathologie/Cardiologie et système cardiovasculaire
dc.subject.halSciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Biophysique
bordeaux.journalPhysical Review E : Statistical, Nonlinear, and Soft Matter Physics
bordeaux.page010901
bordeaux.volume92
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-02886262
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02886262v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20E%20:%20Statistical,%20Nonlinear,%20and%20Soft%20Matter%20Physics&rft.date=2015-07&rft.volume=92&rft.issue=1&rft.spage=010901&rft.epage=010901&rft.eissn=1539-3755&rft.issn=1539-3755&rft.au=BERNUS,%20Olivier&VIGMOND,%20Edward&rft.genre=article


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