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Responses of a Noisy Excitable System to External Signals with Different Periods |
| JIA Xun;ZHOU Lu-Qun;OUYANG Qi |
| School of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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JIA Xun, ZHOU Lu-Qun, OUYANG Qi 2004 Chin. Phys. Lett. 21 435-438 |
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Abstract 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:1 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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| Keywords:
05.40.Ca
05.45.-a
87.10.+e
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Published: 01 March 2004
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