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Abstract
The effects of variations in potential barrier height on stochastic resonance in a multistable system are investigated in this experimental work. It is found that small reductions in the potential barrier height tend to shift the stochastic resonance peak to lower values of input noise intensity. For demonstration purposes the work relies on the destabilizing shift produced by near-resonant perturbations on bistable subcritical bifurcations. It is proposed that multistable systems may take advantage of induced stochastic resonance in order to improve the signal-to-noise ratio, especially in cases where only a limited or fixed amount of input noise is available.
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