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Neurons and fibres in the chick and homing pigeon hippocampus were described following Golgi impregnation. Two principal classes of neurons were distinguished: projection neurons with distant projecting axons and spiny dendrites, and local circuit neurons. In the homing pigeon and chicken hippocampus there are three types of projection neurons: pyramidal,(More)
Having injected Phaseolus Vulgaris Lectin (PhA-L) iontophoretically to subpretectal (SP) and postero-ventralis (PV) thalamic nuclei, labelled fibers and terminals appeared in nucleus rotundus (Rt). The PhA-L immunostained fibers are divided dichotomically and they develop long terminal sections with large varicosities. In EM preparates PhA-L labelled(More)
The nucleus rotundus receives GABA-like immunoreactive fibres from the nuclei subpretectalis and postero-ventralis thalami. This result was confirmed by Phaseolus vulgaris leucoagglutinin (PhA-L) anterograde tracer and with electron microscopic (EM) gamma-aminobutiric acid (GABA)-immunogold staining. The detailed electron microscopic analysis of the(More)
After PhA-L injection into the tectum opticum of chickens, column-like labelled terminal arborizations were found in tectum and also labelled neurons of Ipc and Imc in the corresponding sections. The PhA-L labele proved the projection from both Imc and Ipc neurons to tectum; their terminal axonarborizations were clearly discernible. Column-like terminal(More)
Following a demonstration of Golgi-impregnated neurons and their terminal axon arborization in the optic tectum, the neurons of the nucleus parvocellularis and magnocellularis isthmi were studied by means of postembedded electron-microscopical (EM) gamma-aminobutyric acid (GABA)-immunogold staining. In the parvocellular nucleus, none of the neuronal cell(More)
Three types of local circuit neurons have recently been reported in the homing pigeon hippocampus. The principal type appears to be constituted by the medium-sized angular or ovoid local circuit neurons that occur in all layers of the hippocampus. The current Golgi study has revealed that these neurons can be classified according to their axonal(More)
Ischemia followed by reperfusion of skeletal muscle frequently takes place in trauma surgery. Anoxia followed by reoxygenation leads to reperfusion injury, which damages the involved tissues. However, no information is available about how the neuromuscular junction is affected by ischemia-reperfusion. Tourniquet ischemia of the left hind limb was applied in(More)
The EM preparates displayed in the nucleus rotundus also symmetrical type of synapses with flattened vesicles, known this type as inhibitory synapsis. To prove this supposition and to find the sources of inhibitory terminals GABA-immunostaining was applied in the diencephalon of chicks. The preparates were examined by light- and electronmicroscope. In nucl.(More)
In the present study the terminals of retinal fibres and those of internal layer cells in ventral geniculate nucleus of chicks were labelled with the anterograde tracer biotinylated dextran amine. The tracer showed the connections from the internal cell layers of ventral geniculate nucleus to the medial part of the dorsal lateral geniculate nucleus. The(More)
The anatomical connection of the magnocellular isthmic nucleus with the optic tectum was investigated with the axonal tracer biotinylated dextran amine. Following iontophoretic injection of this tracer into different areas of the chick optic tectum, neurones of both magno- and parvocellular isthmic nuclei were labelled together in a topographical(More)