ROD AND CONE INTERACTION IN DARK-ADAPTED MONKEY GANGLION CELLS
ROD AND CONE INTERACTION IN DARK-ADAPTED MONKEY GANGLION CELLS
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DOI：
10.1113/jphysiol.1966.sp007928
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发表时间：
1966-01-01
影响因子：
5.5
通讯作者：
LINK, K
中科院分区：
文献类型：
--
作者：
GOURAS, P;LINK, K
通过分析暗适应恒河猴视网膜中央窝大神经节细胞的反应潜伏期来研究视杆-视锥相互作用。视杆细胞和视锥细胞的信号都集中在这些细胞上。视锥系统的敏感性较低，但速度比视杆细胞快得多，因此，视锥细胞决定了刺激的阈上潜伏期。对较暗刺激的反应完全由视杆细胞决定。最早的信号，以刺激神经节细胞留下一个短暂的不应在他们的觉醒。因此，当同时刺激视杆细胞和视锥细胞时，到达神经节细胞的较早的视锥细胞信号比较晚的视杆细胞信号有更大的机会产生兴奋。
Rod-cone interaction was studied by analyzing the response latency of large ganglion cells in the perifovea of dark-adapted Rhesus monkey retina. Both rod and cone signals converge on such cells. The cone system is less sensitive but much faster than that of the rods so that the cones determine latency whenever stimuli become suprathreshold for them. Responses to dimmer stimuli are determined entirely by the rods. The earliest signals to excite the ganglion cell leave a transitory refractoriness in their wake. Therefore when both rods and cones are stimulated simultaneously, the earlier cone signal, arriving at the ganglion cell, has a greater chance of producing excitation than the later rod signals.