[Cytoarchitecture and histochemical fluorescence studies of the cingulate cortex in the rat]

The cingular cortex of the rat was examined by means of Golgi's rapid impregnation technique, the glyoxylic acid technique for the detection of biogenic amines and a ninhydrin reaction in the octanoic milieu for the detection of GABA. Six interneuron types are described, differing with respects to their dendrite configurations and axon morphology. The noradrenaline innervation shows considerable differences as compared to the dopamine fibre system. GABA-containing neurons of various shapes and sizes are concentrated in the laminae II and III. The findings are discussed in connection with the conception according to the which the Gyrus cinguli as part of the limbic system might play a role in the genesis of psychopathological processes.