Definition

Noun: - Either of two gyri on either side of the central sulcus: In neuroanatomy, a "central gyrus" refers specifically to one of the two prominent folds of the brain's cerebral cortex located immediately adjacent to the central sulcus. This includes the precentral gyrus (anterior to the sulcus) and the postcentral gyrus (posterior to the sulcus).

Usage

The term is used exclusively in anatomical and neurological contexts to describe these specific brain structures. - The primary motor cortex is located in the precentral gyrus. - Sensory information from the body is processed in the postcentral gyrus.

Advanced Usage

• "Precentral gyrus": The gyrus located anterior to the central sulcus, crucial for voluntary motor control.
• "Postcentral gyrus": The gyrus located posterior to the central sulcus, essential for processing somatic sensations.

Variants and Related Words

• Gyrus (n): A ridge or fold on the cerebral cortex.
• Sulcus (n): A groove or furrow on the brain's surface, especially the central sulcus which separates the frontal and parietal lobes.
• Precentral gyrus (n): The anterior central gyrus.
• Postcentral gyrus (n): The posterior central gyrus.

Synonyms

• Rolandic gyrus: A less common synonym, named after the anatomist Luigi Rolando.

Notes on Meaning

The term "central gyrus" is almost always used in its specific anatomical sense. It is not typically used in isolation in general language but rather as part of the compound terms "precentral gyrus" and "postcentral gyrus" to specify location and function.

Noun

1. either of two gyri on either side of the central sulcus