Stochastic resonance in the Brusselator model

Using the Brusselator model, we show that in a simple dynamical system smal l noise can be converted into stochastic spikewise oscillations of huge amp litude (bursting noises) in the vicinity of a Hopf bifurcation. Small perio dic signals with amplitude several times less than the noise intensity tran sform these stochastic oscillations into quasiperiodic large-amplitude spik ewise oscillations or small-amplitude quasiharmonic oscillations, depending on the signal form.