Frequency-selective response of periodically forced coupled FHN models via system size multi-resonance.
We consider system of globally coupled FitzHugh-Nagumo (FHN) models; each element is subjected to a subthreshold periodic signal and independent Gaussian white noise. With the variation of the system size, the spike train of the mean field of the system fires according to the period of the subthreshold external signal or to the interior time scale of the FHN model. The influence of the coupling strength is also investigated. It only influences the response of the mean field to external signal. If two external signals are injected to the system simultaneously, the least-common-multiple periods or other common multiples may be selected by different system sizes.
Zhao
Gang
G
Department of Chemical Physics, University of Science and Technology of China, Hefie, Anhui 230026, People's Republic of China.
Hou
Zhonghuai
Z
Xin
Houwen
H
D003198:Computer Simulation; D008956:Models, Chemical; D009622:Noise; D013269:Stochastic Processes; D009435:Synaptic Transmission / Q000502:physiology