Schnapf J L, Copenhagen D R
Nature. 1982 Apr 29;296(5860):862-4. doi: 10.1038/296862a0.
Photoreceptors of the vertebrate retina hyperpolarize in response to light. The hyperpolarization elicited by a brief flash is approximately ten times slower in rods than in cones of the same retina. We have examined the amplification and temporal properties of synaptic transfer of rod and cone signals to a common postsynaptic element, the horizontal cell. We find that the kinetics of signal transfer at these chemical synapses parallels the speed of the light-evoked signals themselves.
脊椎动物视网膜的光感受器在受到光刺激时会发生超极化。在同一视网膜中，短暂闪光引发的超极化在视杆细胞中的速度比视锥细胞慢约十倍。我们研究了视杆细胞和视锥细胞信号向共同的突触后元件水平细胞进行突触传递的放大作用和时间特性。我们发现，这些化学突触处信号传递的动力学与光诱发信号本身的速度相似。
