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 journalJournal articlepeer-review

25 Citations (Scopus)


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 languageEnglish
Article number016212
Number of pages5
JournalPhysical Review E
Issue number1
Publication statusPublished - 26 Jul 2004

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


Dive into the research topics of 'Spiral breakup due to mechanical deformation in excitable media'. Together they form a unique fingerprint.

Cite this