Stochastic resonance in a discrete neuron with time delay and two different modulation signals

被引：18
作者：
Wang, Can Jun [1 ,2 ]
Yang, Ke Li [1 ,2 ]
Qu, Shi Xian [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Inst Theoret & Computat Phys, Xian 710062, Peoples R China
[2] Baoji Univ Arts & Sci, Nonlinear Res Inst, Baoji 721016, Peoples R China
来源：
PHYSICA SCRIPTA | 2014年 / 89卷 / 10期
基金：
中国国家自然科学基金;
关键词：
time delay; stochastic resonance; discrete neuronal model; VIBRATIONAL RESONANCE; NOISE; COHERENCE;
D O I：
10.1088/0031-8949/89/10/105001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Stochastic resonance in an excitable neuron based on the Rulkov map with noise, delay feedback, low-frequency signal and high-frequency signal is investigated numerically. The results show that there exist an optimal noise intensity, optimal time delay and optimal amplitude of the high-frequency signal at which the phase synchronisation between the low-frequency input signal and the output signal is the best. The Fourier coefficient is calculated to measure the stochastic resonance. It is found that the existence of a maximum in the Q - tau, Q - B and Q - D plots is the identifying characteristic of the stochastic resonance phenomenon.
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收藏
页数：7
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