Coherence resonance due to transient thresholds in excitable systems.

摘要: Excitable systems can have more than one response threshold, but accessing each of these is only facilitated by preferential choice the appropriate components in input noise. The coherence resonance phenomenon discovered Pikovsky and Kurths [Phys. Rev. Lett. 78, 775 (1997)] utilizes thus leaving nature dynamics a possible second threshold unspecified. Here we show using FitzHugh-Nagumo excitable system that be reached transiently brief pulses negative noise component, leading to its own. occur both as function amplitude frequency. also illustrated realistic Hodgkin-Huxley model equations, analytical predictions are made probabilistic considerations input. This attributes complex role play systems.