Noise-induced phenomena in environmental systems - Noise-induced Phenomena in the Environmental Sciences - page 166

Figure 4.32. Relation between the coefficient of variation (CV) of the times between
consecutive excitation spikes and the intensity of the stochastic forcing. Modified
after Sieber et al. ( 2007 ).
excitation events. Figure 4.32 shows the dependence of the CV on the intensity s gn
of the stochastic forcing. It is observed that the CV exhibits a minimum (i.e., more
regular - or coherent - oscillations) for intermediate noise intensity, consistent with
the notion of coherence resonance.