Stochastic-resonant spatiotemporal patterns in an inhibitorily coupled FitzHugh-Nagumo ring

A. D. SÁNCHEZ; G. G. IZÚS; M. G. DELL'ERBA; G. A. ZARZA; N. MARTINEZ; L. VASALLO; R. R. DEZA; G. V. SAVINO; C. M. FORMIGLI

Como

Conferencia; 23th International Conference on Nonlinear Dynamics of Electronic Systems NDES 2015; 2015

We study the stochastic-resonant synchronization properties of a ring of excitable FitzHugh?Nagumo cells, when nearest-neighbor units are coupled diffusively with strength E through their inhibitor fields. The system is submitted to a common subthreshold adiabatic signal.The germ of the numerically observed stochastic-resonant spatiotemporal self-organization of the excitation activity, is captured in a two-cell model for which both analytical and experimental results (on an electronic analogue) are discussed.