Yang X L, Xu L W
Shanghai Institute of Physiology, Academia Sinica, PRC.
Sci China B. 1992 Sep;35(9):1079-84.
Changes in electroretinographic b-wave in the presence of background lights of increasing intensity were examined in isolated, superfused carp retinas. Within a certain range of ambient illumination b-waves elicited by red (695 nm) test flashes against dimmer background lights were smaller in size than against brighter ones. Accordingly, incremental thresholds for red flashes decreased as the intensity of background lights increased within this intensity range. The results suggest that cone pathways may be suppressed by rods in darkness and dim illumination. The phenomenon was absent for photoreceptor potentials (PIII components), indicating that the rod-cone interaction occurs in second-order retinal neurons.
在分离的、超灌注的鲤鱼视网膜中，研究了在背景光强度增加时视网膜电图b波的变化。在一定范围的环境光照下，由红色（695nm）测试闪光在较暗背景光下引发的b波比在较亮背景光下引发的b波尺寸更小。因此，在该强度范围内，随着背景光强度的增加，红色闪光的增量阈值降低。结果表明，在黑暗和弱光条件下，视锥细胞通路可能受到视杆细胞的抑制。光感受器电位（PIII成分）未出现这种现象，表明视杆-视锥细胞相互作用发生在视网膜二级神经元中。
