Parallel processing in the visual cortex - The 'what' and 'where' paths

6 important questions on Parallel processing in the visual cortex - The 'what' and 'where' paths

What is the secondary visual cortex (V2)

The part of the brain (occipital cortex) which processes the information further and transmits it to additional areas (the V1 sends information tot the V2)

What is the visual pathways in the cerebral cortex?

Processing in areas V1 and V2 of the occipital cortex, information branches in several directions in the parietal cortex and temperal cortex

What is the ventral stream?

The "what" pathway through the temperal cortex which is specialized for identifying and recognizing objects
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What is the dorsal stream?

The "where" pathway through the parietal cortex which helpts the motor system locate objects

What happens when people have damage to the dorsal stream / parietal cortex?

Can't: accurately reach out to grasp an object, oblivious to their location, not sure where certain parts of their body are
Can: read, recognize faces, describe objects in detail

What happens when people have damage to the ventral stream / temporal cortex?

Can't: read, recognize faces, identify objects by sight
Can: see where objects are, take a walk accurately going around obstacles in the way

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