Kichigina V F, Bragin A G
Neirofiziologiia. 1976;8(3):259-66.
Functional characteristics of two main intrahippocampal connections (dentate fascia-field CA3 and field CA3-field CA1) were studied in unanesthetized rabbits. Electrical stimulation of FD or CA3 was used during extracellular recording of the CA3 or CA1 neuronal activity, respectively. The system CA3-CA1 is a highly effective, with a very narrow threshold zone and wide range of active frequencies. The process of recruitment during continuous rhythmic stimulation is weak, any signs of prolonged potentiation are absent. The system FD-CA3 is characterized by low effeciency, a wide threshold zone, narrow range of active frequencies. It is able of gradual building up and prolonged preservation of potentiated state. The morphological reasons of these differences and possible role of these systems in the hippocampal activity are discussed.
在未麻醉的兔子中研究了海马体内两个主要连接（齿状回-海马CA3区和海马CA3区-海马CA1区）的功能特性。分别在细胞外记录CA3区或CA1区神经元活动时，对齿状回（FD）或CA3区进行电刺激。海马CA3区-海马CA1区系统效率很高，阈值区非常窄，有效频率范围宽。连续节律性刺激时的募集过程较弱，不存在任何长时程增强的迹象。齿状回-海马CA3区系统的特点是效率低、阈值区宽、有效频率范围窄。它能够逐渐建立并长期保持增强状态。讨论了这些差异的形态学原因以及这些系统在海马活动中的可能作用。
