中国物理B ›› 2006, Vol. 15 ›› Issue (10): 2450-2457.doi: 10.1088/1009-1963/15/10/044

• 8000 CROSSDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

The spike timing precision of FitzHugh--Nagumo neuron network coupled by gap junctions

张素花, 展　永, 于　慧, 安海龙, 赵同军   

  1. School of Sciences, Hebei University of Technology, Tianjin 300130, China
  • 收稿日期:2005-12-20 修回日期:2006-06-07 出版日期:2006-10-20 发布日期:2006-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10375016 and 10474018) and the Natural Science Foundation of Hebei Province (Grant Nos C2005000011and A2004000005) and the Key Subject Construction Project of Hebei Provincia

The spike timing precision of FitzHugh--Nagumo neuron network coupled by gap junctions

Zhang Su-Hua(张素花)†, Zhan Yong(展永), Yu Hui(于慧), An Hai-Long(安海龙), and Zhao Tong-Jun(赵同军)   

  1. School of Sciences, Hebei University of Technology, Tianjin 300130, China
  • Received:2005-12-20 Revised:2006-06-07 Online:2006-10-20 Published:2006-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10375016 and 10474018) and the Natural Science Foundation of Hebei Province (Grant Nos C2005000011and A2004000005) and the Key Subject Construction Project of Hebei Provincia

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摘要： It has been proved recently that the spike timing can play an important role in information transmission, so in this paper we develop a network with N-unit FitzHugh--Nagumo neurons coupled by gap junctions and discuss the dependence of the spike timing precision on synaptic coupling strength, the noise intensity and the size of the neuron ensemble. The calculated results show that the spike timing precision decreases as the noise intensity increases; and the ensemble spike timing precision increases with coupling strength increasing. The electric synapse coupling has a more important effect on the spike timing precision than the chemical synapse coupling.

Abstract: It has been proved recently that the spike timing can play an important role in information transmission, so in this paper we develop a network with N-unit FitzHugh--Nagumo neurons coupled by gap junctions and discuss the dependence of the spike timing precision on synaptic coupling strength, the noise intensity and the size of the neuron ensemble. The calculated results show that the spike timing precision decreases as the noise intensity increases; and the ensemble spike timing precision increases with coupling strength increasing. The electric synapse coupling has a more important effect on the spike timing precision than the chemical synapse coupling.

Key words: spike timing precision, gap junction, FitzHugh--Nagumo model

中图分类号:  (Neural networks and synaptic communication)

  • 87.18.Sn
02.60.Lj (Ordinary and partial differential equations; boundary value problems) 87.19.L- (Neuroscience) 87.19.R- (Mechanical and electrical properties of tissues and organs)