Coherence Resonance In Circadian Rhythms

In the present work, using the fruit-flies circadian system,we investigate its dynaminal behavior and the effect of the white-noise on the nonlinear system numerically.When the system is located in the stable-equilibrium which is far away from the Hopf bifurcation,adding the white-noise on the velocity stem, it is found that under the influence of white-noise coherence resonance occurs and the period of oscillation is close to 24 hours.