Spiral breakup due to mechanical deformation in excitable media

Hong Zhang; Xiao Sheng Ruan; Bambi Hu; Qi Ouyang

doi:10.1103/PhysRevE.70.016212

Spiral breakup due to mechanical deformation in excitable media

Hong Zhang^*, Xiao Sheng Ruan, Bambi Hu, Qi Ouyang

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

25 Citations (Scopus)

Abstract

To address the problem of how cardiac muscle contraction affects the dynamics of rotating spiral waves, spiral breakup induced by mechanical deformation in excitable media is studied in two partial-differential-equation models. It is shown that spirals begin to break up at ω=0.5ω0 when we increase the amplitude of the mechanical deformation gradually. Our numerical results point to a new mechanism of transition from spirals to spatiotemporal chaos, in which the anisotropic time-dependent diffusion coefficient is essential.

Original language	English
Article number	016212
Pages (from-to)	016212-1-016212-5
Number of pages	5
Journal	Physical Review E
Volume	70
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevE.70.016212
Publication status	Published - 26 Jul 2004

Scopus Subject Areas

Statistical and Nonlinear Physics
Statistics and Probability
Condensed Matter Physics

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10.1103/PhysRevE.70.016212

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title = "Spiral breakup due to mechanical deformation in excitable media",

abstract = "To address the problem of how cardiac muscle contraction affects the dynamics of rotating spiral waves, spiral breakup induced by mechanical deformation in excitable media is studied in two partial-differential-equation models. It is shown that spirals begin to break up at ω=0.5ω0 when we increase the amplitude of the mechanical deformation gradually. Our numerical results point to a new mechanism of transition from spirals to spatiotemporal chaos, in which the anisotropic time-dependent diffusion coefficient is essential.",

author = "Hong Zhang and Ruan, {Xiao Sheng} and Bambi Hu and Qi Ouyang",

note = "Funding Information: This work was supported in part by grants from the National High Technology Research and Development Program of China, the National Nature Science Foundation of China, the Hong Kong Research Grants Council (RGC), and the Hong Kong Baptist University Faculty Research Grant (FRG). The authors acknowledge the support of Hong Kong Baptist University{\textquoteright}s High Performance Cluster Computing Center Supported by Dell and Intel.",

year = "2004",

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doi = "10.1103/PhysRevE.70.016212",

language = "English",

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T1 - Spiral breakup due to mechanical deformation in excitable media

AU - Zhang, Hong

AU - Ruan, Xiao Sheng

AU - Hu, Bambi

AU - Ouyang, Qi

N1 - Funding Information: This work was supported in part by grants from the National High Technology Research and Development Program of China, the National Nature Science Foundation of China, the Hong Kong Research Grants Council (RGC), and the Hong Kong Baptist University Faculty Research Grant (FRG). The authors acknowledge the support of Hong Kong Baptist University’s High Performance Cluster Computing Center Supported by Dell and Intel.

PY - 2004/7/26

Y1 - 2004/7/26

N2 - To address the problem of how cardiac muscle contraction affects the dynamics of rotating spiral waves, spiral breakup induced by mechanical deformation in excitable media is studied in two partial-differential-equation models. It is shown that spirals begin to break up at ω=0.5ω0 when we increase the amplitude of the mechanical deformation gradually. Our numerical results point to a new mechanism of transition from spirals to spatiotemporal chaos, in which the anisotropic time-dependent diffusion coefficient is essential.

AB - To address the problem of how cardiac muscle contraction affects the dynamics of rotating spiral waves, spiral breakup induced by mechanical deformation in excitable media is studied in two partial-differential-equation models. It is shown that spirals begin to break up at ω=0.5ω0 when we increase the amplitude of the mechanical deformation gradually. Our numerical results point to a new mechanism of transition from spirals to spatiotemporal chaos, in which the anisotropic time-dependent diffusion coefficient is essential.

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DO - 10.1103/PhysRevE.70.016212

M3 - Journal article

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VL - 70

SP - 016212-1-016212-5

JO - Physical Review E

JF - Physical Review E

IS - 1

M1 - 016212

ER -

Spiral breakup due to mechanical deformation in excitable media

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