Several patch clamp configurations have b een used to study the activity of ionic channels . the resting potential and capa citance as well as resistance of different lens cells were also measured 不仅记录了晶体细胞膜上多种通道活动,还测量了不同种属晶体上皮细胞的静息膜电位和膜电容,以及位于晶体内不同深度的晶体纤维细胞间的缝隙连接电阻。