A Golgi study on the nucleus accumbens septi of the rat

Golgi impregnations of one-month-old Wistar rats show 3 different neuronal types in the nucleus accumbens septi. These types could be clearly established on the basis of the size and shape of the soma and dendritic pattern; dendritic spines could not be used as a useful criterion for distinguishing among the 3 types. The type I neurons were the most widely distributed, while the giant type II cells are restricted to the ventral region. Type III neurons are fusiform cells; according to the axon branching, these neurons and those of type I may be interneurons.