We report the occurrence of vibrational resonance in excitable systems. Namely, we show
that an optimal amplitude of the high-frequency driving enhances the response of an
excitable system to a low-frequency signal. The phenomenon is confirmed in an excitable
electronic circuit and in the FitzHugh–Nagumo model. In this last case we also analyze the
influence of additive noise and the interplay between stochastic and vibrational resonance.
Additionally, we show that this effect can be extended to spatially extended excitable media …