Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Globus Pallidus

  • Ekaterina DobryakovaEmail author
  • Seema Shroff
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_320

Definition

The globus pallidus (pale globe) forms the medial part of the lentiform nucleus.

Nomenclature

  • Striatum/neostriatum = caudate nucleus (nucleus caudatus) + putamen

  • Lentiform nucleus = putamen + globus pallidus

  • Corpus striatum (dorsal division) = caudate nucleus + putamen + globus pallidus

Current Knowledge

Anatomy

The medial medullary lamina divides the globus pallidus into a lateral external segment (GPe) and a medial internal segment (GPi).

Relations

The globus pallidus is bounded by the putamen laterally. It is separated from the caudate nucleus by the anterior limb of the internal capsule. The ansa lenticularis runs inferiorly.

Histology

The cell density of the globus pallidus is 1/20 that of the neostriatum. Although the external segment is larger and has a higher cell density than the internal segment, the morphology of the neurons in both segments is similar. The majority of neurons are large and multipolar, with discoid dendritic arbors.

Enkephalinergic neurons...

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Traumatic Brain Injury ResearchKessler FoundationWest OrangeUSA
  2. 2.Department of Anatomy and NeurobiologyVirginia Commonwealth UniversityRichmondUSA