Die Struktur der Synapsen im Nucleus dentatus des Menschen

Summary

The knowledge of the morphology of the synapse in the dentate nucleus is limited to the work of Cajal, who described the afferent fibers but not their end-formations. A. Jakob also described the afferent fibers in man with the Golgi method but was no more successful than Cajal. In this contribution the nature of the synapse was investigated with the unreduced variant of the silver carbonate technique of del Rio Hortega. The afferent fibers from the amiculum surround the neurons and their processes with a complicated network of fibers which contains numerous endbulbs and rings and form small plexus. There are three types of end-formations: a) those with an accentuation of the afferent fibers around the proximal segments of the dendrites; b) those with approximately even distribution of the afferent fibers around the pericaryon and the dendrites; c) those with numerous baskets which surround the processes.