[Fluorescence histochemistry and neurohistologic studies of the adrenergic innervation of the pyriform cortex in the rat].

The pyriform region of normal adult rats was investigated by fluorescence histochemistry and Golgi-rapid-impregnation technique. Fluorescence microscopically noradrenaline and dopamine fibers could be described in typical arrangement and distribution. It is suggested that various Golgi-"beaded" -axons in the cortex pyriformis may be equivalent to the fluorescence histochemically demonstrated varicose catecholamine axons. This would raise the possibility of interpreting, in the Golgi impregnation technique, kinds of axons in a functional manner.