Medial globus pallidus

Medial globus pallidus
Globus pallidus labeled at bottom right.
DA-loops in PD
Details
Latin	Globus pallidus medialis, globus pallidus internus
Identifiers
NeuroNames	hier-215
NeuroLex ID	Globus pallidus internal segment
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of neuroanatomy [[[d:|edit on Wikidata]]]

The medial globus pallidus (or internal, GPi) is one of the output nuclei of the basal ganglia (the other being the substantia nigra pars reticulata). The GABA-containing neurons send their axons to specific nuclei of the dorsal thalamus (VA and VL), to the centromedian complex and to the pedunculopontine complex.

The efferent bundle is constituted first of the ansa and fasciculus lenticularis, then crosses the internal capsule as the Edinger's comb system then arrives at the laterosuperior corner of the subthalamic nucleus and constitutes the field H₂ of Forel, then H, and suddenly changes its direction to form field H₁ that goes to the inferior part of the thalamus. The distribution of axonal islands is widespread in the lateral region of the thalamus. The innervation of the central region is done by collaterals.

See also

• Globus pallidus
• Lateral globus pallidus