Focusing in Multiwell Potentials: Applications to Ion Channels
  We investigate out of equilibrium stationary distributions induced by a stochastic dichotomous noise on double and multi-well models for ion channels. Ion-channel dynamics is analyzed both through over-damped Langevin equations and master equations. As a consequence of the external stochastic noise, we prove a non trivial focusing effect, namely the probability distribution is concentrated only on one state of the multi-well model. We also show that this focusing effect, which occurs at physiological conditions, cannot be predicted by a simple master equation approach. 
L. Ponzoni, G.L. Celardo, F. Borgonovi, L. Kaplan, A. Kargol
cond-mat.mes-hall