Kiss I
Acta Biol Acad Sci Hung. 1979;30(1):103-19.
In the CNS of Lymnaea stagnalis it was verified for two paired cells (A11--A11' and P1--A10) that the interneuronal connection is realized by electronic transmission. The evidences of electrical coupling: 1:1 synchronity of spontaneous activities; the delay of transmission is less than that in the case of a chemical synapse; any neurone can drive the firing of its own coupled pair; the transmission is bidirectional both for depolarization and hyperpolarization. The active and passive electrical constants of the electrical junctions were estimated. The coupling coefficients appeared to be relatively large. The coupling coefficient and the junctional resistance depend on the stimulating current to a high degree. The value of capacity of junction exceeds that of soma, or is equal to it, and is a function of the stimulating current, so the characteristics of the transmission are determined by a variable impedance, rather than by a simple ohmic resistance. The morphological properties of the junctions were examined with light microscope using intracellular CoCl2 staining. It is suggested that cell A11' may be derived from an anomalous duplication of cell A11. The morphological and functional differences between the two paired cells examined are reflected in the detailed properties of the junctions. These differences between the two paired cells examined are reflected in the detailed properties of the junctions. These differences may have a significance concerning the role of the paired cells in the neuronal network.
在椎实螺的中枢神经系统中，已证实两对细胞（A11 - A11'和P1 - A10）之间的神经元间连接是通过电传递实现的。电耦合的证据如下：自发活动的1:1同步性；传递延迟小于化学突触的情况；任何神经元都能驱动其耦合对的放电；去极化和超极化的传递都是双向的。对电连接的主动和被动电学常数进行了估算。耦合系数似乎相对较大。耦合系数和连接电阻在很大程度上取决于刺激电流。连接的电容值超过或等于胞体的电容值，并且是刺激电流的函数，因此传递特性由可变阻抗决定，而非简单的欧姆电阻。使用细胞内CoCl2染色，通过光学显微镜检查了连接的形态学特性。有人提出细胞A11'可能源自细胞A11的异常复制。所检查的两对细胞之间的形态学和功能差异反映在连接的详细特性中。所检查的这两对细胞之间的这些差异反映在连接的详细特性中。这些差异可能对于成对细胞在神经网络中的作用具有重要意义。
