Somogyi G, Hajdu F, Tömböl T
Exp Brain Res. 1978 Mar 15;31(3):417-31. doi: 10.1007/BF00237299.
Electron microscopical studies of the thalamic AV-AM nuclei substantiated the presence of two main types of neurons, i.e. principal (or relay) cells and Golgi type II interneurons. Characteristic synaptic islands are found in abundance in the AV-AM. Four different types of synaptic terminals have been identified in these islands: RL-boutons = large axonal terminals with round synaptic vesicles; RS-boutons = small axonal terminals with round synaptic vesicles; F1-boutons = small axonal profiles containing flattened synaptic vesicles, and F2-profiles interpreted as presynaptic dendrite appendages, bearing pleomorphic vesicles, both belonging to the Golgi type II interneurons. --The synaptic relations were studied in normal preparations and after lesions in the mamillary body, limbic cortex and hippocampus. The specific afferents (RL-boutons)--originating from the medial mamillary nucleus--are presynaptic to both relay cell dendrites and "presynaptic" dendrite profiles of Golgi type II interneurons, which in turn are presynaptic to the same relay dendrites (synaptic triads). RS-boutons originate mainly from limbic cortex and hippocampus.
对丘脑前腹侧-前内侧核（AV-AM）的电子显微镜研究证实存在两种主要类型的神经元，即主（或中继）细胞和高尔基II型中间神经元。在AV-AM中大量发现了特征性的突触岛。在这些突触岛中已鉴定出四种不同类型的突触终末：RL终扣=具有圆形突触小泡的大型轴突终末；RS终扣=具有圆形突触小泡的小型轴突终末；F1终扣=含有扁平突触小泡的小型轴突形态，以及F2形态，被解释为携带多形性小泡的突触前树突附属物，两者均属于高尔基II型中间神经元。——研究了正常标本以及乳头体、边缘皮质和海马损伤后的突触关系。源自内侧乳头核的特定传入纤维（RL终扣）对中继细胞树突和高尔基II型中间神经元的“突触前”树突形态均为突触前，而后者又对相同的中继树突为突触前（突触三联体）。RS终扣主要源自边缘皮质和海马。
