3rd October 2019

utexas
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What is the function of the visual cortex?

Most of our cognitive functions and perceptual processes are carried out by the neocortex, which is the largest part of the human brain. The primary visual cortex is the part of the neocortex that receives visual input from the retina.

Herein, what part of the brain is the visual cortex?

Also known as the striate cortex, or simply V1, the primary visual cortex is located in the most posterior portion of the brain's occipital lobe . In fact, a large part of the primary visual cortex cannot be seen from the outside of the brain, because this cortex lies on either side of the calcarine fissure.

How much of the brain is devoted to vision?

In the brain itself, neurons devoted to visual processing number in the hundreds of millions and take up about 30 percent of the cortex, as compared with 8 percent for touch and just 3 percent for hearing.

What is the visual pathway to the brain?

The optic tract wraps around the midbrain to get to the lateral geniculate nucleus (LGN), where all the axons must synapse. From there, the LGN axons fan out through the deep white matter of the brain as the optic radiations, which will ultimately travel to primary visual cortex, at the back of the brain.
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