BENOLKEN R M
Biophys J. 1961 Sep;1(7):551-64. doi: 10.1016/s0006-3495(61)86908-7.
Intracellular electrodes were inserted into single photoreceptor units of the excised lateral eye of Limulus, and preparations were selected from which graded receptor potentials of relatively large amplitude could be recorded in response to light stimuli. The experimental data indicated that the graded receptor potential does not arise solely from a collapse of the resting membrane potential of the sensory cells of the eye, since a reversal of polarity of the photoreceptor unit could be demonstrated when the eye was stimulated by light. In the recovery period following stimulation, characteristic changes in the so-called resting potential were recorded. It is suggested that these changes in the so-called resting membrane potential are electrical signs of recovery processes occurring in the photoreceptor, because the potential changes were recorded when the eye was in darkness and because the magnitudes of the potential changes were a predictable function of the intensity and duration parameters of the preceding light stimulus.
将细胞内电极插入切除的鲎侧眼中的单个光感受器单元，并挑选出能对光刺激记录到相对大幅度分级感受器电位的标本。实验数据表明，分级感受器电位并非仅由眼感觉细胞静息膜电位的崩溃产生，因为当用光刺激眼睛时，可证明光感受器单元的极性发生了反转。在刺激后的恢复期，记录到了所谓静息电位的特征性变化。有人提出，所谓静息膜电位的这些变化是光感受器中发生的恢复过程的电信号，因为这些电位变化是在眼睛处于黑暗中时记录到的，而且电位变化的幅度是先前光刺激强度和持续时间参数的可预测函数。
