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Using the method of the retrograde axonal transport of horseradish peroxidase and a microelectrode technique, a population of neurons sending axons to the upper portion of the duodenum was identified in the dorsal motor nucleus of the vagus nerve. It was established that the maximal number of such neurons was located 1.0-2.5 mm rostral to the obex. The(More)
Distribution of degenerating synaptic boutons in fields 18 and 19 of the cat cerebral visual cortex was studied in every layer electron microscopically after the white substance was dissected under one of these fields. It was demonstrated that the V-shaped system under investigation consisting of associative fibres connects four superficial cortical layers(More)
The investigation has been performed in the human brain of persons at the age of 75-87 years, in the auditory cortex of old cats and in bioplates obtained from epileptic foci of the hippocamp and the temporal cortex of 11 patients suffering from temporal epilepsy (at the age of 12-29 years). Distal parts of the dendrites contain a large amount of(More)
To study electron microscopically intracortical connections between areas 18 and 19 in the visual cortex of the cat brain, the distribution of synaptic terminals in every lamina of these areas was investigated after dissection of their border as deep as the grey matter. Mainly axo-dendritic synapses in large, small dendrites and in spines degenerated(More)
The development of cluster organization of neurons forming direct interzonal associative projections from striate cortex (area 17) to extrastriate area 21a in cat was studied by a technique of horseradish peroxidase retrograde transport. Reconstruction of cortical region containing retrogradely labeled neurons was performed using continuous serial sections(More)