The Mechanism of Bifurcation-Dependent Coherence Resonance of Morris-Lecar Neuron Model

被引：0
|
作者：
Zhang, Guangjun [1 ]
Xu, Jianxue [1 ]
Wang, Jue [1 ]
Yue, Zhifeng [1 ]
Liu, Chunbo [1 ]
Yao, Hong [1 ]
Wang, Xiangbo [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Peoples R China
来源：
ADVANCES IN COGNITIVE NEURODYNAMICS, PROCEEDINGS | 2008年
基金：
美国国家科学基金会;
关键词：
Coherence resonance; transition; bifurcation point; Morris-Lecar neuron model;
D O I：
10.1007/978-1-4020-8387-7_17
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
The mechanism of bifurcation-dependent coherence resonance (CR) of excited neuron model is related to the system motion random transitions between attractors on two sides of bifurcation point. In this paper, the relation between the random transitions and the mechanism of bifurcation-dependent CR is examined in Morris-Lecar (ML) neuron model. Here we show that there exist different attractors on two sides of ML neuron model Hopf bifurcation point and that the system motion may transit between attractors on two sides of bifurcation point at the presence of noise. And the frequency of transitions tend towards a certain frequency for a certain optimal noise intensity, the signal-noise-ratio of system response evaluated at this certain frequency is maximal at the optimal noise intensity, CR occurs.
引用
收藏
页码：83 / +
页数：3
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