Brugioni S, Hwang D-U, Meucci R, Boccaletti S
Istituto Nazionale di Ottica Applicata, Largo E. Fermi, 6, 50125 Florence, Italy.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jun;71(6 Pt 1):062101. doi: 10.1103/PhysRevE.71.062101. Epub 2005 Jun 13.
We give evidence of coherence resonance in an excitable electronic circuit whose dynamics obeys the FitzHugh-Nagumo model system, under the application of different noise sources, ranging from Gaussian white noise to colored 1/f2 noises. The resonance behavior can be significantly reinforced when experimental parameters are tuned in order to place the stable fixed point closer to the excitability threshold of spiking behavior, as well as when the time scales of the circuit are properly modified. A quantitative description of the effects of noise correlations in inducing the resonant behavior is provided.
我们给出了在一个可激发电子电路中出现相干共振的证据，该电路的动力学服从菲茨休 - 纳古莫模型系统，在不同噪声源的作用下，这些噪声源范围从高斯白噪声到有色1/f²噪声。当调整实验参数以使稳定不动点更接近尖峰行为的激发阈值时，以及当电路的时间尺度被适当地修改时，共振行为会得到显著增强。本文还提供了噪声相关性在诱导共振行为方面的定量描述。
