Cubero David, Baltanás J P, Casado-Pascual Jesús
Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, Sevilla 41080, Spain.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Jun;73(6 Pt 1):061102. doi: 10.1103/PhysRevE.73.061102. Epub 2006 Jun 19.
The effect of a high-frequency signal on the FitzHugh-Nagumo excitable model is analyzed. We show that the firing rate is diminished as the ratio of the high-frequency amplitude to its frequency is increased. Moreover, it is demonstrated that the excitable character of the system, and consequently the firing activity, is suppressed for ratios above a given threshold value. In addition, we show that the vibrational resonance phenomenon turns up for sufficiently large noise strength values.
分析了高频信号对FitzHugh-Nagumo可兴奋模型的影响。我们表明，随着高频幅度与其频率之比的增加，放电率会降低。此外，还证明了对于高于给定阈值的比率，系统的可兴奋特性以及因此的放电活动会受到抑制。此外，我们表明，对于足够大的噪声强度值，会出现振动共振现象。
