basal ganglion
Noun: A basal ganglion is any of several clusters of nerve cell bodies (gray matter) located deep within each cerebral hemisphere of the brain. These structures are part of a complex system that plays a crucial role in coordinating and regulating voluntary motor movements, as well as in certain cognitive and emotional functions.
The term "basal ganglion" is used in medical, neurological, and biological contexts to refer to these specific brain structures. It is typically used in the singular when referring to one such cluster, but the plural "basal ganglia" is far more common, as these structures usually function as a group. - The neurologist explained that the patient's tremor was related to dysfunction in a basal ganglion. - Parkinson's disease is associated with the degeneration of neurons in the basal ganglia.
- In technical literature, the term is almost exclusively used in its plural form, "basal ganglia," to describe the interconnected system. The singular "basal ganglion" is less frequent.
- The basal ganglia are involved in pathways that facilitate desired movements and inhibit unwanted ones. Dysfunction can lead to movement disorders like Parkinson's disease, Huntington's disease, and dystonia.
- Basal ganglia (n, plural): The standard term for the collective group of these nuclei, including structures like the caudate nucleus, putamen, globus pallidus, subthalamic nucleus, and substantia nigra.
- Striatum (n): A major component of the basal ganglia, consisting of the caudate nucleus and putamen.
- Extrapyramidal system (n): A neural network that includes the basal ganglia and is involved in motor control.
- Basal nuclei: A less common but synonymous term.
- Subcortical gray matter nuclei: A more descriptive technical synonym.
- Motor control: The primary function associated with the basal ganglia.
- Corticobasal ganglia-thalamocortical loop: The complex neural circuit in which the basal ganglia are a key component, involved in motor planning and execution.
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any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement
