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The primary visual cortex, which is defined by its function or stage in the visual system, is approximately equivalent to the striate cortex, also known as Brodmann area 17, which is defined by its anatomical location.
The visual cortex is the primary cortical region of the brain that receives, integrates, and processes visual information relayed from the retinas. It is in the occipital lobe of the primary cerebral cortex, which is in the most posterior region of the brain.
The second visual area, also known as the secondary visual cortex, V2, or the prestriate cortex, occupies much of Brodmann area 18 and in some cases 19. The secondary visual cortex surrounds the primary visual cortex and receives information from it.
The primary visual cortex makes up a small portion of the visible surface of the cortex in the occipital lobe, but because it stretches into the calcarine sulcus, it makes up a significant portion of cortical surface overall.
From there, axons project to the primary visual cortex, also called the striate cortex or V1, located in the occipital lobe. Figure 25.6. A horizontal section of the brain. The optic tract enters the brain and projects dorsally to the thalamus. Information is then sent to the primary visual cortex in the occipital lobe.
The visual cortex in the occipital lobe consists of the primary visual cortex (striate cortex or V1) and extrastriate (secondary) visual cortical areas such as V2, V3, V4, V5, and so on. Collectively, the primary and secondary visual cortices consist of a mosaic of several dozen visual areas that occupies a large fraction of cerebral cortex ...
A second set of neurons carries the visual signals to the primary visual cortex from the thalami. In the primary visual cortex, six layers of cells extract basic information about the edges, depth, orientation, motion, and color of objects in the visual field. The primary visual cortex is retino-topically organized, so each part the visual ...
Though most of the neurons in the secondary visual cortex have properties similar to those of the neurons in the primary visual cortex, many others have the distinctive trait of responding to far more complex shapes.
The visual cortex is the primary cortical region of the brain that receives, integrates, and processes visual information relayed from the retinas. It is in the occipital lobe of the primary cerebral cortex, which is in the most posterior region of the brain.
Traditionally, the primary visual cortex (V1, striate cortex) has been defined based on Brodmann's cytoarchitectonic studies and coincides with the area of cortex that receives photic inputs, relayed from the retina via the lateral geniculate nucleus (LGN).