Cuneus Of The Brain, Medial View

Description

Cuneus cortex occupies the wedge-shaped medial occipital lobe bounded anteriorly by the parieto-occipital sulcus and inferiorly by the calcarine sulcus, with its apex directed posteriorly toward the occipital pole. Superiorly, the cuneus meets the precuneus across the parieto-occipital sulcus, while inferior and parallel to it the lingual gyrus lies on the opposite bank of the calcarine sulcus. Along the medial wall, the relationship between these sulci defines the cortical banks that bracket the calcarine fissure and orient the viewer to primary and associative visual areas. A fixed medial perspective makes the cuneus easy to localize. Clinical relevance centers on visual field representation: cortex bordering the calcarine sulcus includes primary visual cortex (V1), and lesions involving the cuneus commonly produce contralateral inferior quadrantanopia because superior bank involvement maps the lower visual field. Posterior cerebral artery infarction, occipital contusion, or tumor infiltration can all selectively affect this region, and the medial surface view helps correlate a patient’s deficit with a tractable cortical territory rather than a vague “occipital lesion.” The sulcal boundaries are the landmarks surgeons and neuroradiologists use when planning or describing medial occipital approaches, including evaluations for epileptogenic foci adjacent to the calcarine region. Small territory, big consequences. Use this illustration for neuroanatomy teaching on sulci and gyri of the medial cerebral hemisphere, for neurology and neuroradiology lectures on visual field defects, or for surgical atlas figures that need the parieto-occipital sulcus and calcarine sulcus called out with unambiguous topography. It also fits well in stroke education materials discussing posterior cerebral artery syndromes and occipital lobe localization. Anatomical accuracy verified by SciePro's Medical Advisory Board.