| 随机共振系统输入阈值的频率特性 |
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| 引用本文： | 王嘉赋,刘锋,王均义,陈光,王炜.随机共振系统输入阈值的频率特性[J].物理学报,1997,46(12):2305-2312. |
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| 作者姓名： | 王嘉赋 刘锋 王均义 陈光 王炜 |
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| 作者单位： | 南京大学物理系 |
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| 摘 要： | 通过对双稳态系统和Ｈｉｎｄｍａｒｓｈ-Ｒｏｓｅ神经元输入信号阈值的频率特性进行数值计算，分别研究了非自激和可自激随机共振系统输入阈值随信号频率的依赖关系，提出了确定非自激系统阈值的频率特性的解析方法；指出了可自激系统阈值的频率特性可能在某些频区出现反常极小现象，并对产生这一现象的物理原因进行了理论分析．
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| 关 键 词： | 非自激 可自激 随机共振 输入阈值 频率特性 |
| 收稿时间： | 1997-04-28 |
FREQUENCY CHARACTERISTICS OF THE INPUT THRESHOLDS OF STOCHASTIC RESONANT SYSTEMS |
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| WANG JIA-FU,LIU FENG,WANG JUN-YI,CHEN GUANG and WANG WEI.FREQUENCY CHARACTERISTICS OF THE INPUT THRESHOLDS OF STOCHASTIC RESONANT SYSTEMS[J].Acta Physica Sinica,1997,46(12):2305-2312. |
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| Authors: | WANG JIA-FU LIU FENG WANG JUN-YI CHEN GUANG and WANG WEI |
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| Abstract: | By simulating the frequency behaviors of the input thresholds in a bistable system and a Hindmarsh Rose neuron, respectively, we study how the input thresholds depend on the frequency of input signal in both non excitable and excitable nonlinear systems in which stochastic resonance may appear. We also present an approximate approach to get the frequency characteristics of input threshold analytically and analyze the unusual minima of the frequency characteristics in excitable systems. |
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