Repositori institucional URV
| Author, as appears in the article.: | Skardal, P.S., Restrepo, J.G. |
| Journal publication year: | 2014 |
| ISSN: | 1054-1500 |
| e-ISSN: | 1089-7682 |
| Abstract: | The spatiotemporal dynamics of cardiac tissue is an active area of research for biologists, physicists, and mathematicians. Of particular interest is the study of period-doubling bifurcations and chaos due to their link with cardiac arrhythmogenesis. In this paper, we study the spatiotemporal dynamics of a recently developed model for calcium-driven alternans in a one dimensional cable of tissue. In particular, we observe in the cable coexistence of regions with chaotic and multi-periodic dynamics over wide ranges of parameters. We study these dynamics using global and local Lyapunov exponents and spatial trajectory correlations. Interestingly, near nodes-or phase reversals-low-periodic dynamics prevail, while away from the nodes, the dynamics tend to be higher-periodic and eventually chaotic. Finally, we show that similar coexisting multi-periodic and chaotic dynamics can also be observed in a detailed ionic model. |
| Article's DOI: | 10.1063/1.4901728 |
| Link to the original source: | http://scitation.aip.org/content/aip/journal/chaos/24/4/10.1063/1.4901728 |
| Papper version: | info:eu-repo/semantics/publishedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Enginyeria Informàtica i Matemàtiques |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Entity: | Universitat Rovira i Virgili. |
| Journal volume: | 24 |
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| File | Description | Format | |
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| DocumentPrincipal | DocumentPrincipal | application/pdf |
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