Calcarine Sulcus Of The Human Brain, Posterior View

Description

Calcarine sulcus dominates the medial occipital lobe in this posterior view, running roughly horizontal from the occipital pole toward the parieto-occipital region within the interhemispheric fissure. Superior to the sulcus lies the cuneus, while the lingual gyrus occupies the inferomedial surface, creating the familiar cuneolingual configuration that frames the primary visual cortex along the banks of the groove. Posteriorly, the sulcus approaches the occipital pole, and more anteriorly it converges toward the junction where the parieto-occipital sulcus meets the calcarine sulcus. Deep and sharply defined. Anatomically, the calcarine sulcus is the surface landmark for the striate cortex (Brodmann area 17), so its contour maps directly to visual field representation, with central vision near the occipital pole and more peripheral field represented progressively anterior along the sulcal banks. Infarction in the posterior cerebral artery territory, including the calcarine artery distribution, commonly produces contralateral homonymous hemianopia, and occipital pole sparing can occur when collateral supply from the middle cerebral artery is present. This fixed posterior-medial perspective supports teaching and figure work that needs an unambiguous relationship between sulcal anatomy, the cuneus and lingual gyrus, and clinical localization of cortical visual deficits. Use this illustration for neuroanatomy and neurophysiology coursework covering visual pathways, for neuroradiology or stroke teaching files that correlate PCA territory lesions with visual field loss, and for textbooks or patient education material introducing occipital lobe landmarks before discussing calcarine-sparing hemianopia or occipital contusions. Anatomical accuracy verified by SciePro's Medical Advisory Board.