Noise-induced oscillation
NIO was nvestigated in a model of an oil-water membrane oscillator. First, we analyzed an unexcitable region and an excitable region of the system by proposing a critical threshold of NIO appearance and found a linearlike relation between the critical hreshold and noise intensity. Then the phenomenon of noise-induced coherence resonance was nvestigated by calculating the signal-to-noise ratio. Furthermore, it was found that an optimal noise intensity range could most improve the appearance of effective oscillation
EO. The presence of EO regions made the stochastic model show EO at a more extended region than the deterministic description.