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  • Title: [The projections of the ventral field of the tegmentum mesencephali, substantia nigra and amygdaloid nuclei to different segments of the putamen in the dog].
    Author: Gorbachevskaia AI.
    Journal: Morfologiia; 1996; 110(4):42-7. PubMed ID: 8983505.
    Abstract:
    Organization of protections of the complex "substantia nigraventral tegmental field" (SN-VTA) to dorsal and ventral segments of rostral and caudal regions of putamen was studied in dog by method based on retrograde axonic transport of horseradish peroxidase. A difference is found in organization of projections of subcortical formations studied both in rostro-caudal and dorso-ventral directions. Only compact SN part projects to putamen rostral region dorsal segment and both compact and dorsal SN parts--to this region ventral segment. Apart from these two parts of lateral SN area also project to putamen caudal regions dorsal and ventral segments. Limbic system structures projections to putamen dorsal and ventral segments make a significant difference as well. VTA and amygdala were found to project only to putamen anterior and posterior regions ventral segments and not to dorsal. Putamen rostral region ventral segment receive projection from all fibres from neurons of macro- and mediocellular parts of amygdala basal nucleus to the same extent and same segment located more caudally--mostly from its macrocellular part. In putamen ventral segments SN projection fibres end too and thus on this area overlapping of functionally different subcortical formations projections occurs.
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