ELECTROPHYSIOLOGICAL-HISTOLOGICAL STUDIES ON SOME FUNCTIONAL PROPERTIES OF VISUAL CELLS AND SECOND-ORDER NEURONS OF AN INSECT RETINA
ELECTROPHYSIOLOGICAL-HISTOLOGICAL STUDIES ON SOME FUNCTIONAL PROPERTIES OF VISUAL CELLS AND SECOND-ORDER NEURONS OF AN INSECT RETINA
复制标题
DOI：
10.1007/bf00307446
复制
发表时间：
1973-01-01
期刊：
影响因子：
--
通讯作者：
ZETTLER, F
中科院分区：
文献类型：
--
作者：
JARVILEHTO, M;ZETTLER, F
利用细胞内电位记录技术，结合组织学上的细胞识别和定位技术，对昆虫视网膜的长型和短型视细胞以及一些二级神经元进行了细胞水平上的信息处理研究。在我们研究的所有细胞类型中，信息的轴突传导不是通过脉冲齐射完成的，而是通过梯度电位完成的。视觉细胞通过去极化电位对光刺激作出反应，二级神经元通过超极化电位对光刺激作出反应。在相同的刺激条件下，比较了不同类型细胞的视觉反应，通过比较正弦波刺激激发的L2电位和突触前R1-6电位，研究了突触的传导特性。R1-6细胞和L1-2细胞的不同视野引起了苍蝇眼睛第一视神经节内侧向抑制的说法。
Intracellular potential recording in combination with a histological technique of cell identification and localization of the recording site was used to get some results about information processing properties of an insect retina on the cellular level.Visual cells of the long type and the short type, as well as some second order neurons were studied. In all the cell types we studied, the axonal conduction of information was not accomplished by impulse volleys but rather by graded potentials. The visual cells respond to a light stimulus by depolarizing potentials, the second order neurons by hyperpolarizing potentials. The visual responses of the various cell types were contrasted with each other at identical stimulus situations.By contrasting the L2-potentials, exited by sine-wave stimulation, with the presynaptic R1–6-potentials, we studied the transducing property of the synapse.All cell types studied, exhibited different visual fields. The different visual fields of R1–6-cells and L1–2-cells give rise to claim for a lateral inhibition within the first optic ganglion of the fly's eye.