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篇目详细内容 |
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【篇名】 |
Firing rates of coupled noisy excitable elements |
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【刊名】 |
Frontiers of Physics |
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【刊名缩写】 |
Front. Phys |
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【ISSN】 |
2095-0462 |
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【EISSN】 |
2095-0470 |
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【DOI】 |
10.1007/s11467-013-0365-1 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2014 |
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【卷期】 |
9
卷1期 |
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【页码】 |
120-127
页,共
8
页 |
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【作者】 |
Shuai Liu;
Zhi-;
Wei He;
Meng Zhan;
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【关键词】 |
coupled excitable elements; firing rate; noise; coherence resonance |
【摘要】 |
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The dynamics of coupled excitable FitzHugh–Nagumo systems under external noisy driving is studied. Different from most of previous work focusing on the noise-induced regularity in the framework of coherence resonance, here the average frequency (or firing rate) of coupled excitable elements is of much more concern. We find that (i) their frequencies first increase and then decrease with the increase of the coupling, and there is a clear crossover from a rush increase to a smooth increase with the increase of noise strength, and (ii) for nonidentical cases, all elements transit to an identical frequency simultaneously only after a certain coupling strength is achieved. These first-increase-thendecrease non-monotonic frequency behavior and isochronous frequency synchronization are believed to be two basic behaviors in coupled noisy excitable systems. |
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