Vibrational resonance induced by transition of  phase-locking modes in excitable systems

AUTHOR(s): Yang,Lijian / Liu,Wangheng / Yi,Ming（通讯作者）

Abstract: We study the occurrence of vibrational resonance as well as the underlying mechanism in excitable
systems. The single vibration resonance and vibration bi-resonance are observed when tuning the
amplitude and frequency of high-frequency force simultaneously. Furthermore, by virtue of the
phase diagram of low-frequency-signal-free FitzHugh-Nagumo model, it is found that each maxima
of response measure is located exactly at the transition boundary of phase patterns, therefore, it
is the transition between different phase-locking modes that induces vibrational resonance in the
excitable systems. Finally, this novel mechanism is verified in the Hodgkin-Huxley neural model.
Our results provide new insights into the transmission of weak signals in nonlinear systems, which
are valuable in engineering for potential applications