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Organization of the Connections of the Rostromedial Tegmental Nucleus with Structures of the Morphofunctional Basal Ganglia System in the Dog Brain

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The spatial organization of the projections of the rostromedial tegmental nucleus (RMTg) to functionally diverse segments of the structures of the basal ganglia in dogs (n = 25) were studied by retrograde axonal transport of horseradish peroxidase. Connections between the limbic segments of the RMTg and the limbic segments of the zona incerta and the pallidum constituted evidence pointing to the segregated conduction of limbic information. In addition, these studies showed that the projections of the limbic medial and motor lateral segments of the RMTg overlap, within the pedunculopontine and entopeduncular nuclei, with fibers arriving in these nuclei from neurons in functionally diverse nuclei. The presence of labeled sparsely branched, long-axon “reticular” RMTg neurons projecting to the structures of interest is also evidence that this nucleus has an integrative function. Thus, the morphological substrate for information processing in the morphofunctional system of the basal ganglia underlying the mechanisms of their functioning was analyzed.

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  1. Laboratory for the Physiology of Higher Nervous Activity, Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia

    A. I. Gorbachevskaya

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  1. A. I. Gorbachevskaya
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Correspondence to A. I. Gorbachevskaya.

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Translated from Morfologiya, Vol. 151, No. 2, pp. 25–29, March–April, 2017.

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Gorbachevskaya, A.I. Organization of the Connections of the Rostromedial Tegmental Nucleus with Structures of the Morphofunctional Basal Ganglia System in the Dog Brain. Neurosci Behav Physi 48, 427–431 (2018). https://doi.org/10.1007/s11055-018-0582-8

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  • DOI: https://doi.org/10.1007/s11055-018-0582-8

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