The primary visual cortex is located in the (b) occipital lobe and it is where visual processing begins.
In both cerebral hemispheres, the primary visual cortex is located in the occipital lobe. It encircles and extends into the calcarine sulcus, a deep sulcus. Although the main visual cortex occupies only a small percentage of the occipital lobe's visible cortex, it occupies a sizable portion of the cortex' overall surface due to its extension into the calcarine sulcus.
Due to the existence of a broad band of myelinated axons that runs along the borders of the calcarine sulcus, the primary visual cortex is occasionally also referred to as the striate cortex.
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