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Noise-sustained synchronization in a FitzHugh-Nagumo ring with electrical phase-repulsive coupling

  • Matías G. dell’Erba
  • Guadalupe Cascallares
  • Alejandro D. Sánchez
  • Gonzalo G. Izús
Regular Article

Abstract

We study the dynamical response under local noise of an excitable ring of FitzHugh-Nagumo units coupled through nearest-neighbor phase-repulsive electric synapses. The system is externally, adiabatically driven by a weak subthreshold periodic signal and independent Gaussian white noises. By varying the coupling strength and the noise intensity, two routes to noise-sustained synchronization are numerically observed and elucidated in terms of the system’s non-equilibrium potential. In particular, the threshold noise intensity for synchronization is theoretically predicted and numerically confirmed.

Keywords

Statistical and Nonlinear Physics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Matías G. dell’Erba
    • 1
  • Guadalupe Cascallares
    • 2
  • Alejandro D. Sánchez
    • 1
  • Gonzalo G. Izús
    • 1
  1. 1.IFIMAR, Instituto de Investigaciones Físicas de Mar del Plata (CONICET–UNMDP), Facultad de Ciencias Exactas y NaturalesUniversidad Nacional de Mar del PlataMar del PlataArgentina
  2. 2.Centro Atómico BarilocheCONICET, San Carlos de BarilocheAGP Río NegroArgentina

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