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Spiral wave in an inhomogeneous excitable medium

Zhang Guo-Yong Ma Jun Gan Zheng-Ning Chen Yong

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Spiral wave in an inhomogeneous excitable medium

Zhang Guo-Yong, Ma Jun, Gan Zheng-Ning, Chen Yong
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  • Using a Barkley model as an example,the pattern formation of spiral waves in inhomogeneous excitable medium is investigated. The normal distribution of parameters fluctuations is introduced to depict the inhomogeneous medium. It is found that the parameter fluctuations play an important role in the formation of spiral pattern. For a larger variance of the parameter fluctuations,the spiral waves are rough. In the case of the uniform distribution of fluctuations in two parameters,spiral wave cannot be observed for fluctuations beyond a certain range. It is conjectured that these results are induced by the rotating frequency of spiral wave for different parameters. For the larg rotating frequency,the spiral wave pattern is finely crowded,while it is sparse for small frequencies.
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  • Abstract views:  6947
  • PDF Downloads:  938
  • Cited By: 0
Publishing process
  • Received Date:  15 December 2007
  • Accepted Date:  02 April 2008
  • Published Online:  20 November 2008

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