ORGANIZATION OF THE PROJECTIONS OF THE SUBSTRUCTURES OF DEEP MESENCEPHALIC NUCLEUS TO THE STRIATUM IN THE DOG BRAIN
A I Gorbachevskaya , A I Gorbachevskaya
Morphology ›› 2012, Vol. 141 ›› Issue (2) : 23 -27.
ORGANIZATION OF THE PROJECTIONS OF THE SUBSTRUCTURES OF DEEP MESENCEPHALIC NUCLEUS TO THE STRIATUM IN THE DOG BRAIN
Method of retrograde axonal transport of horseradish peroxidase was used to study the organization of the projections of the individual substructures of the deep mesencephalic nucleus complex to the functionally diverse regions of striatal structures of the dog brain (n=20). It was shown that the projection fibers of the neurons of the nucleus profundus mesencephali were directed to the ventro-lateral segment of the nucleus caudatus and the ventral segment of the putamen. The dorsal segment of the putamen obtains the fibers from the neurons of the nucleus cuneiformis, while the lateral segment of the nucleus accumbens received them from the neurons of the nucleus subcuneiformis. The possible pathways for conduction of the functionally diverse information and its integration in the investigated projection systems are discussed.
brain / basal ganglia / striatum / deep mesencephalic nucleus
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