Resonance phenomena in a nonlinear neuronal circuit
Résumé
We characterizes a nonlinear circuit driven by a bichromatic excitation,
that is the sum of two sinusoidal waves with different frequencies f1 and f2 such
that f2 > f1. Our experiments are confirmed by a numerical analysis of the system
response obtained by solving numerically the differential equations which rule the
circuit voltages. Especially, we highlight that the response of the system at the low
frequency can be optimized by the amplitude of the high frequency. By revisiting this
well known vibrational resonance effect in the whole amplitude frequency parametric
plane, we show experimentally and numerically that a much better resonance can be
achieved when the two frequencies which drives the circuit are multiple or submulti-
ples.