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System size selected effects induced by clustering in two-dimensional coupled cell systems

Zhang Ji-Qian Chen Han-Shuang Shen Chuan-Sheng

System size selected effects induced by clustering in two-dimensional coupled cell systems

Zhang Ji-Qian, Chen Han-Shuang, Shen Chuan-Sheng
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  • Abstract views:  3299
  • PDF Downloads:  766
  • Cited By: 0
Publishing process
  • Received Date:  18 March 2007
  • Accepted Date:  04 July 2007
  • Published Online:  20 November 2007

System size selected effects induced by clustering in two-dimensional coupled cell systems

  • 1. (1)安徽师范大学物理与电子信息学院,芜湖 241000; (2)安徽师范大学物理与电子信息学院,芜湖 241000;安庆师范学院教育技术系,安庆 246011

Abstract: Using stochastic simulation and chemical Langevin methods, we numerically investigated the influence of clustering of cells on the system size effects in two-dimensional coupled internal noisy cell systems. It was found that, when the system works near the Hopf bifurcation, the systems' cells assemble to a team in forming, a cell cluster. Interestingly, the teamwork in clustering may significantly raise the system's working efficiency, leading to the system obtaining the best performance under external stimulus. Furthermore, for different coupling intensities the optimal cluster size varies in robustness to external stimuli, but the signal-to-noise ratio (SNR) shows an increscent tendency with the coupling intensity increasing. These phenomena illustrate that clustering of cells may greatly enhance the sensitivity of Ca2+ signal, by which the biologic systems would probably improve their capability to respond to external stimulation.

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