Cornwall M C, Gorman A L
Brain Res. 1982 May 13;239(2):624-8. doi: 10.1016/0006-8993(82)90539-x.
A single electrode voltage clamp was used to examine the prolonged hyperpolarizing afterpotential (PHA) which accompanies photoconversion of a substantial fraction of rhodopsin (lambda max = 500 nM) to metarhodopsin (lambda max = 575 nM) in distal photoreceptor cells in the retina of the bay scallop, Pecten irradians. The PHA appears to result from a persistent light-activated outward K+ current passing through the same channels responsible for the normal receptor potential in these cells.
使用单电极电压钳来检测在海湾扇贝（Pecten irradians）视网膜的远端光感受器细胞中，相当一部分视紫红质（最大吸收波长 = 500 nM）光转化为变视紫红质（最大吸收波长 = 575 nM）时伴随出现的延长超极化后电位（PHA）。PHA似乎是由持续的光激活外向钾离子电流引起的，该电流通过与这些细胞中正常感受器电位相关的相同通道。
