Fig. 11.

Effect of endolymphatic administration of 10 μM phenamil or 10 μM amiloride on the EP. a Effect of endolymphatic administration of phenamil on the EP. A few minutes after the administration of phenamil, the EP decreases to ~0 mV. b Effect of endolymphatic administration of amiloride on the EP. A few minutes after the administration of amiloride the EP drops to ~+20 mV. In both experiments, an initial biphasic change in the EP was observed, but this change cannot be explained at the present time