fig. 4.
The effect of ethanol on Ih activation curve. A: representative traces of Ih evoked by a series of voltage steps as indicated. Traces before and during superfusion of ethanol (100 mM) are overlaid. Tail current amplitudes at -105 mV were measured at the time indicated by the arrow. B: tail current amplitudes, after subtraction of the current amplitude after no hyperpolarizing voltage step, are plotted versus the preceding test potentials. The dashed lines represent fit to a Boltzmann function. The data are from the same experiment as in A.