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  Initiation of rotors by fast propagation regions in excitable media: A theoretical study

Gao, X., Krekhov, A., Zykov, V. S., & Bodenschatz, E. (2018). Initiation of rotors by fast propagation regions in excitable media: A theoretical study. Frontiers in Physics, 6: 8. doi:10.3389/fphy.2018.00008.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-B8C2-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-B0F5-1
Genre: Journal Article

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 Creators:
Gao, Xiang1, Author              
Krekhov, Alexei1, Author              
Zykov, Vladimir S.1, Author              
Bodenschatz, Eberhard1, Author              
Affiliations:
1Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063287              

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Free keywords: excitable media; rotor initiation; arrhythmia; source-sink mismatch; fast propagation
 Abstract: We study the effect of geometry of a fast propagation region (FPR) in an excitable medium on the rotor initiation using a generic two-dimensional reaction-diffusion model. We find that, while the flat boundary of a rectangularly shaped FPR may block the propagation of the excitation wave, a large local curvature at the rounded corners of the FPR would prevent the blockage and thus initiate a rotor. Our simulations demonstrate that the prerequisites for the rotor initiation are the degree of the heterogeneity, its shape and size. These results may explain the incidence of arrhythmias by local heterogeneities induced, for example, by a cardiac tissue remodeling.

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Language(s): eng - English
 Dates: 2018-02-13
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.3389/fphy.2018.00008
 Degree: -

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Title: Frontiers in Physics
Source Genre: Journal
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Pages: 10 Volume / Issue: 6 Sequence Number: 8 Start / End Page: - Identifier: -