We study the propagation of periodic pulse trains in excitable media exposed to external spatio-temporal noise using … weak noise approximation we find noise-induced transitions in the dispersion relation of pulse trains. We discuss noise …-enhanced propagation of pulse trains within a certain wave-length range caused by external noise of moderate strength. Copyright EDP …

purely additive thermal and dichotomous noise sources. We find situations where bimodality of stationary densities emerges … due to presence of dichotomous noise. The solutions are constructed using stochastic dynamics (Langevin equation) or by …

The dynamics of a spatially extended system of two competing species in the presence of two noise sources is studied. A … correlated dichotomous noise acts on the interaction parameter and a multiplicative white noise affects directly the dynamics of … Gaussian approximation. In this formalism the system dynamics is analyzed for different values of the multiplicative noise …