Time-Delay Enhanced Coherence Resonance in a Discrete Neuron with Noises

Coherence resonance in a discrete excitable neuronal model with noises and time delays is investigated. The effects of the time delays on coherence resonance are revealed in two cases： Gaussian white and Gaussian color noises, respectively. The coefficient of variation of interspike intervals is cal...

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Bibliographic Details
Published inChinese physics letters Vol. 31; no. 8; pp. 8 - 11
Main Author 王参军 杨科利 屈世显
Format Journal Article
LanguageEnglish
Published 01.08.2014
Subjects
Coherence
Color
Gaussian
Mathematical models
Neurons
Noise
Noise intensity
Time delay
噪声强度
延时
数值模拟
时间延迟
相干共振
神经元模型
离散
高斯色噪声
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/8/080502

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Summary:Coherence resonance in a discrete excitable neuronal model with noises and time delays is investigated. The effects of the time delays on coherence resonance are revealed in two cases： Gaussian white and Gaussian color noises, respectively. The coefficient of variation of interspike intervals is calculated by numerical simulation. The results show that the coherence resonance is enhanced with the time delay increasing in the weak noises intensity cases, while there is no effect in the large noise intensity. Moreover, the coherence resonance can be held back by the self-correlation time, when the system is driven by a color noise.
Bibliography:11-1959/O4
WANG Can-Jun, YANG Ke-Li, QU Shi-Xian（1 Institute of Theoretical and Computational Physics, School of Physics and Information Technology, Shaanxi Normal University, Xi＇an 710062 2Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721016）
Coherence resonance in a discrete excitable neuronal model with noises and time delays is investigated. The effects of the time delays on coherence resonance are revealed in two cases： Gaussian white and Gaussian color noises, respectively. The coefficient of variation of interspike intervals is calculated by numerical simulation. The results show that the coherence resonance is enhanced with the time delay increasing in the weak noises intensity cases, while there is no effect in the large noise intensity. Moreover, the coherence resonance can be held back by the self-correlation time, when the system is driven by a color noise.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/8/080502