Fig. 3. Effect of droperidol on the inactivating Na+current in somata . (A ) Recordings of Na+current in the control solution and in the presence of 10 and 30 μm droperidol. (B ) Concentration dependence of the total Na+current suppression by droperidol (12 somata ). The data points were fitted using , giving IC50 = 11.6 ± 2.0 μm and Res = 0.17.