Stochastic Resonance in Chemistry. 2. The Peroxidase−Oxidase Reaction
The Journal of Physical Chemistry1996Vol. 100(11), pp. 4442–4447
Citations Over TimeTop 10% of 1996 papers
Abstract
We show that the phenomenon of stochastic resonance exists in the enzymatic peroxidase−oxidase reaction. The free-running system is placed in an excitable steady state close to a supercritical Hopf bifurcation. When a sinusoidal flow rate signal and increasing noise are imposed on this focal steady state and a threshold is crossed, the system responds with the generation of bursts. When stochastic resonance is achieved, the interspike histogram and the plot of the signal-to-noise ratio pass through a maximum at an optimal noise level. We compare the experimental results with calculations of the Hung−Schreiber−Ross model.
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