Figure 2.

Time course of recovery from prepulse facilitation for a single cell with an intrapipette G_βγ concentration of 10 nM. The solid line is a monoexponential fit according to the equation I_+PP/I_−PP = 1 + I_max[exp(−Δt/τ)], where I_+PP and I_−PP are, respectively, the peak currents in the presence and absence of a prepulse, 1 + I_max is the maximum ratio of current facilitation, Δt is the interpulse duration, and τ is the time constant for the decay of the prepulse effect. The value for τ obtained from the fit was 11.7 ms.