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A Minimally Invasive Lesion Technique for Muscles Intrinsic to the Odontophore of Aplysia californica

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Anatomy and Structural Connectivity of the Opercula.

Laurence Charbonneau¹, Salma Mrichi¹, Pierre-Olivier Champagne²

¹Division of Neurosurgery, Centre hospitalier de l'Université de Montréal, Montreal, QC, Canada.

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society

|June 22, 2026

Summary

The cerebral operculum is a complex brain region involved in language and sensory processing. Its intricate structure and vascularization explain its crucial role and the varied symptoms of opercular epilepsy.

Keywords:

Middle cerebral artery Networks Operculum Structural connectivity Sylvian fissure White matter

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Exploring Deep Space - Uncovering the Anatomy of Periventricular Structures to Reveal the Lateral Ventricles of the Human Brain

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Published on: October 22, 2017

Area of Science:

Neuroanatomy
Neuroscience
Vascular Neurology

Background:

The cerebral operculum, historically viewed as a simple anatomical cover, is now understood as a complex periSylvian region.
It is embedded within extensive cortico-cortical and cortico-subcortical networks.

Purpose of the Study:

To provide a comprehensive synthesis of opercular organization.
To integrate topographic anatomy, structural connectivity, and vascular supply of the operculum.

Main Methods:

Review of topographic anatomy, defining opercular subregions by periSylvian sulcal landmarks.
Analysis of structural connectivity, including major white matter tracts and operculum-specific pathways.
Description of vascular supply, focusing on the middle cerebral artery's branches to the opercular region.

Main Results:

The operculum is topographically organized into frontal, rolandic, parietal, and temporal subregions.
It serves as a critical hub in language, auditory, visual, and gustatory networks, supporting multimodal integration.
The middle cerebral artery primarily vascularizes the operculum, supplying both superficial and deep layers.

Conclusions:

The operculum's complex morphology, dense connectivity, and vascularization underpin its functional significance.
These structural features help explain the clinical heterogeneity observed in opercular epilepsy, impacting diagnosis and surgical management.