Under the condition of EAD generation,the low and high membrane level (-25 and -55?mV) of voltage were clamped during the repolarization phase of action potential.

• 在低钾灌流并伴有EAD的情况下 ,于动作电位复极相的低及高电位处 (- 2 5与 - 55mV)分别进行电压钳制。