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Calcium ion spiral wave induced by random calcium ion sparks in single heart cell

Bai Yong-Qiang Zhu Xing

Calcium ion spiral wave induced by random calcium ion sparks in single heart cell

Bai Yong-Qiang, Zhu Xing
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Publishing process
  • Received Date:  19 March 2012
  • Accepted Date:  24 May 2012
  • Published Online:  05 August 2012

Calcium ion spiral wave induced by random calcium ion sparks in single heart cell

  • 1. School of Electronic Science, Northeast Petroleum University, The University-enterprise R & D Center of Measuring and Testing Technology & Instrument and Meter Engineering in Heilongjiang Province, Daqing 163318, China;
  • 2. School of Physics, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing 100871, China;
  • 3. National Center for Nanoscience and Technology, Beijing 100080, China
Fund Project:  Project supported by the Natural Science Foundation of Heilongjiang Province, China (Grant No. A200911), and the National Basic Research Program of China (Grant No. 2007CB936800).

Abstract: Calcium ion spiral wave induced by random released calcium ion sparks in single heart cell is studied using the improved discrete fire-diffuse-fire model and phase analysis method. The results show that calcium ion spiral wave can be excited in resting heart cell by calcium ion sparks at an appropriate release frequency. The key of the generation of calcium ion spiral wave is the emergence of the phase singularity caused by the calcium sparks in the different time and space sequences. The number of phase singularity is exponentially linked with calcium ion spark frequency, and has the limit in a fixed system.

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