Richter J, Ullman S
Biol Cybern. 1982;43(2):127-45. doi: 10.1007/BF00336975.
A model is proposed for the temporal characteristics of X- and Y-type responses of ganglion cells in the primate retina. The main suggestions of the model are: (I) The X-type temporal response is determined primarily by the delay between center and surround contributions. (II) The Y-type response is generated in the inner plexiform layer by a derivative-like operation on the bipolar cell's input, followed by a rectification in the convergence of these inputs onto the Y-ganglion-cell. (III) The derivative-like operation is obtained by recurrent inhibition in the dyad synaptic structure. The X- and Y-type responses predicted by the model, for a variety of stimuli, were examined and compared with available electrophysiological recordings. Finally, certain predictions derived from the model are discussed.
提出了一个关于灵长类视网膜神经节细胞X型和Y型反应时间特性的模型。该模型的主要观点如下：（I）X型时间反应主要由中心和周边贡献之间的延迟决定。（II）Y型反应在内网状层由对双极细胞输入进行类似求导的操作产生，随后这些输入在汇聚到Y神经节细胞时进行整流。（III）类似求导的操作通过双联体突触结构中的递归抑制获得。对该模型针对各种刺激预测的X型和Y型反应进行了检验，并与现有的电生理记录进行了比较。最后，讨论了从该模型得出的某些预测。
