Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 10501-010501.doi: 10.1088/1674-1056/22/1/010501

• GENERAL • 上一篇    下一篇

Effects of non-Gaussian noise on a calcium oscillation system

王兵a b, 孙雅琴b, 唐旭东b   

  1. a Department of Physics, Yunnan University, Kunming 650091, China;
    b Department of Physics and Mathematics, Anhui University of Science and Technology, Huainan 232001, China
  • 收稿日期:2012-03-14 修回日期:2012-06-27 出版日期:2012-12-01 发布日期:2012-12-01
  • 基金资助:
    Project supported by the Natural Science Foundation of Anhui Province, China (Grant No. KJ2012A085).

Effects of non-Gaussian noise on a calcium oscillation system

Wang Bing (王兵)a b, Sun Ya-Qin (孙雅琴)b, Tang Xu-Dong (唐旭东)b   

  1. a Department of Physics, Yunnan University, Kunming 650091, China;
    b Department of Physics and Mathematics, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2012-03-14 Revised:2012-06-27 Online:2012-12-01 Published:2012-12-01
  • Contact: Wang Bing E-mail:hnitwb@163.com
  • Supported by:
    Project supported by the Natural Science Foundation of Anhui Province, China (Grant No. KJ2012A085).

摘要: We investigate the effects of the non-Gaussian colored noise on a calcium oscillation system using stochastic simulation methods. It is found that the reciprocal coefficient of variance R has a maximum (Rmax) with increasing noise intensity Q. The non-Gaussian noise parameter q has an important effect on the system. For some values of q (e.g., q=0.9, q=1.0), R exists a maximum with increasing correlation time τ. Non-Gaussian noise induced spikes are more regular than Gaussian noise induced spikes when q is small and Q has large values. The R has a maximum with increasing q. Therefore, non-Gaussian noise could play more effective roles in the calcium oscillation system.

关键词: non-Gaussian noise, coherence resonance, calcium oscillation

Abstract: We investigate the effects of the non-Gaussian colored noise on a calcium oscillation system using stochastic simulation methods. It is found that the reciprocal coefficient of variance R has a maximum (Rmax) with increasing noise intensity Q. The non-Gaussian noise parameter q has an important effect on the system. For some values of q (e.g., q=0.9, q=1.0), R exists a maximum with increasing correlation time τ. Non-Gaussian noise induced spikes are more regular than Gaussian noise induced spikes when q is small and Q has large values. The R has a maximum with increasing q. Therefore, non-Gaussian noise could play more effective roles in the calcium oscillation system.

Key words: non-Gaussian noise, coherence resonance, calcium oscillation

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
82.40.Bj (Oscillations, chaos, and bifurcations)