Definition

Noun: - The deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres: The sylvian fissure is a major, deep groove on the lateral surface of each cerebral hemisphere in the brain. It is a key anatomical landmark that creates a boundary between the frontal lobe and the temporal lobe.

Usage Examples

• Noun:
  • The neurosurgeon carefully navigated around the sylvian fissure during the delicate procedure.
  • Damage to the area near the sylvian fissure can affect language comprehension.
  • On the MRI scan, the sylvian fissure is clearly visible as a deep cleft.

Advanced Usage

• "The fissure of Sylvius": An alternative, eponymous name for the sylvian fissure, named after the 17th-century anatomist Franciscus Sylvius.
  • The artery ran parallel to the fissure of Sylvius.

Variants and Related Words

• Lateral sulcus: This is the anatomical term synonymous with the sylvian fissure.
• Central sulcus: Another major brain fissure, but it separates the frontal lobe from the parietal lobe, not the temporal lobe.
• Fissure: A general term for a deep groove or cleft, especially in the brain or other organs.

Synonyms

• Lateral sulcus: The primary direct synonym in anatomical terminology.
• Fissure of Sylvius: The eponymous synonym.

Related Phrases

• Sylvian aqueduct: A different neural structure; a canal in the midbrain. It is related only by the shared eponym (Franciscus Sylvius), not by anatomical proximity or function to the sylvian fissure.
• Perisylvian region: The cortex surrounding the sylvian fissure, which is critical for language functions.

Noun

1. the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres