Also known as the parietal stream, the "where" stream, or the "how" stream, this pathway stretches from the primary visual cortex (V1) in the occipital lobe forward into the parietal lobe. It is interconnected with the parallel ventral stream (the "what" stream) which runs downward from V1 into the temporal lobe.
What is meant by the what and where visual pathways?
The Visual Pathway. The visual pathway consists of the retina, optic nerves, optic chiasm, optic tracts, lateral geniculate bodies, optic radiations, and visual cortex. The pathway is, effectively, part of the central nervous system because the retinae have their embryological origins in extensions of the diencephalon.
What are the 3 visual pathways?
Visual pathway
- The retina.
- The optic nerve (CN II)
- The optic chiasm and tract (reticulogeniculate tract)
- The pretectal connections of the visual pathway.
- The lateral geniculate body.
- Optic radiation and visual cortex.
