Identify the brain pathways involved in color perception and also in motion perception.

Identify the brain pathways involved in color perception and also in motion perception.

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Expert Solution

Brain pathways involved in motion pathways:

visual motion perception is associated with both the parietal pathway as well as the temporal visual pathway.
there is an extension of the magnocellular as well as parvocellular subdivision which is present in the retinotropic cortex would be representing the parvo pathway.
this helps in direction of attention present in the objects in the visual environment where the motion sensitive areas are the dorsal magnocellular areas.
also, there occurs involvement of the ventral pathway which would be located in the intersection in the lateral temporal cortex and the dorsal ventral streams will also be involved in motion perception.

pathways in color perception:

it begins from the primary visual cortex, and would be processed through the ventral visual pathway.
there would be comparison of the signals that come from the different photoreceptos.
the cone receptors would be sensiitive to the middle, short and long wavelengths and these would be compared in the retinal circuit.
there will be a relay in the lateral geniculate nucleus
colour processing will take place in the cerebral cortex where there would be lineat summation of cone signals.
there will also be involvement of the inferior temporal cortex that would result in colour discrimination and is the final stage of the pathway.

Hayet Jeridi answered 8 months ago

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