globus pallidus
Học thuậtThân thiện
A detailed diagram shows the globus pallidus within a cross-section of the human brain.
Definition
- 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.
A detailed diagram shows the globus pallidus within a cross-section of the human brain.
Noun
- the inner pale yellow part of the lenticular nucleus