Responses of a Noisy Excitable System to External Signals with Different Periods |
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作者姓名: | 贾珣 周路群 欧阳颀 |
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作者单位: | SchoolofPhysics,PekingUniversity,Beijing100871 |
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摘 要: | The behaviour of an excitable system under Gaussian white noise and external periodic forcing is systematically studied. In a large range of noise intensity, the n:l phase locking patterns are obtained for certain ranges of the input periods, where n input periods give one spike. In the phase locking regimes, the system presents low noise-to-signal ratios and shows better regularities. Out of the regimes the system behaves less regularly and the relations between the noise-to-signal ratio and the noise intensity exhibit typical stochastic resonance phenomena.At a higher noise level, the system shows the characteristic behaviour of the noise.
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关 键 词: | 高斯白噪声 噪声激发系统 相位锁定参数 周期信号 FHN模式 |
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