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Fiber connections between the thalamus and the basal ganglia. Yasuhisa NAKAMURA 1 , Hironobu TOKUNO 1 , Tetsuji MORIIZUMI 1 , Yasuko KITAO 1 1Department of Anatomy, School of Medicine, Kanazawa University pp.384-397
Published Date 1988/6/10
DOI https://doi.org/10.11477/mf.1431906194
  • Abstract
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Relationship between the basal ganglia and the thalamus is reviewed. In this chapter, the striatum (the caudate nucleus and the putamen), the globus pallidus (the internal segment of the glogus pallidus or the entopeduncular nucleus), the substantia nigra (SN) and the pedunculopontine tegmental nucleus (PPN) are described as nuclei of the basal ganglia. Among them, output nuclei of the basal ganglia are the GP, the reticular part of the SN (SNr) and the PPN. They send fibers to the so-called motor related and other thalamic nuclei.

Projection fibers from the GP terminate in the ventral anterior nuclear group. In the monkey, this group corresponds to the Vapc and VLo (Olszewski123)), the VApc and VLa (Jones51)) or the VApc and VAdc (Ilinsky and Kultas-Ilinsky43)), and in the cat ventral anterior nucleus (VA). Besides the ventral anterior nuclear group, the GP also sends fibers to intralaminar nuclei, such as the centrum medianum-parafascicular nuclear complex (CM-Pf), central lateral nucleus and so forth. The SNr sends fibers to the ventral medial nuclear group. In the monkey, the VAmc receives massive inputs and the VLm or VM receives a little. In the cat this is called the ventral medial nucleus. Fibers from the SNr also terminate in some nuclei in the posterior thala-mus. The cerebellar projections to the thalamus terminate also in the motor related nuclei. These nuclei, however, are not the ventral anterior nuc-lear group but the ventral lateral nuclear group. Therefore, the projections from the basal ganglia and the cerebellar nuclei are segregated in the thalamus.


Copyright © 1988, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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