Chinn K, Lisman J
J Gen Physiol. 1984 Sep;84(3):463-73. doi: 10.1085/jgp.84.3.463.
In Limulus ventral photoreceptors, illumination not only increases a specialized light-activated sodium conductance but also modulates voltage-dependent conductances. Previous work has demonstrated that the delayed rectifier current is reduced by light; we report here that the early voltage-dependent inward current is also reduced by light. Furthermore, by maintained during continuous depolarization and that this maintained inward current can be reduced by light. EGTA injection was found to increase the maintained inward current.
在鲎腹侧光感受器中，光照不仅会增加一种特殊的光激活钠电导，还会调节电压依赖性电导。先前的研究表明，延迟整流电流会被光减弱；我们在此报告，早期电压依赖性内向电流也会被光减弱。此外，在持续去极化过程中该电流得以维持，且这种持续的内向电流会被光减弱。研究发现，注射乙二醇双乙醚二胺四乙酸（EGTA）会增加这种持续的内向电流。
