  Recently, stochastic resonance was obtained numerically in an underdamped
periodic potential system driven by a periodic force and a Gaussian white
noise. In that numerical work, the occurrence of stochastic resonance was
explained in terms of the existence of two dynamical states having different
amplitude and phase lag. At zero temperature these two initial condition
dependent dynamical states are stable. However, at elevated temperatures, these
two states make transitions from one to the other at a mean rate. In the
present work, we setup an analog simulation experiment to show the existence of
the two dynamical states in a sinusoidal potential system as well as to verify
the occurrence of stochastic resonance in the same system. The experimental
procedure includes setting the initial conditions for the experiment.
