Definition

1. Noun:
   • A specific structure within the brain: The globus pallidus is a major component of the basal ganglia, a group of subcortical nuclei in the vertebrate forebrain. It is the inner, pale segment of the lentiform nucleus (or lenticular nucleus), which also includes the putamen. It plays a crucial role in the regulation of voluntary movement.

Usage Examples

• Noun:
  • The neuroscientist studied the role of the globus pallidus in motor control circuits.
  • Degeneration of cells in the globus pallidus is associated with certain movement disorders.
  • The surgical target for the deep brain stimulation electrode was the internal segment of the globus pallidus.

Advanced Usage

• "Globus pallidus interna (GPi)" and "Globus pallidus externa (GPe)": In neuroanatomy, the globus pallidus is commonly subdivided into two segments: the internal (GPi) and external (GPe) parts, which have distinct neural connections and functions within the basal ganglia circuitry.
  • Inhibition from the GPi helps to suppress unwanted movements.

Variants and Related Words

• Pallidum: A synonym for the globus pallidus, often used in technical and medical literature.
  • The term "pallidum" derives from the Latin word for "pale," referring to its lighter appearance compared to surrounding structures.
• Basal Ganglia: The larger group of nuclei that includes the globus pallidus, putamen, caudate nucleus, and substantia nigra.
• Lentiform Nucleus / Lenticular Nucleus: The anatomical structure comprising the putamen and the globus pallidus.

Synonyms

• Pallidum: The inner part of the lenticular nucleus.

Related Terms and Phrases

• Pallidotomy: A neurosurgical procedure involving the lesioning of the globus pallidus to treat movement disorders.
  • Pallidotomy was once a common treatment for Parkinson's disease symptoms.
• Pallidal: An adjective relating to the globus pallidus.
  • The patient exhibited pallidal dysfunction.

Noun

1. the inner pale yellow part of the lenticular nucleus