Noise-sustained synchronization in a FitzHugh-Nagumo ring with electrical phase-repulsive coupling Matías G. dell’Erba, Guadalupe Cascallares, Alejandro D. Sánchez and Gonzalo G. Izús Eur. Phys. J. B, 87 4 (2014) 82 Published online: 07 April 2014 DOI: 10.1140/epjb/e2014-41029-2