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Dorsal and Ventral Stream (Geniculostriate Pathway (left half of each…
Dorsal and Ventral Stream
Dorsal Stream
route to the parietal lobe
how or where route
Ventral Stream
route to the temporal lobe
what pathway
Geniculostriate Pathway
left half of each retina goes to the right LGN
LGN has six layers with different functions
other eye fibers (left half of the left eye)
1
same eye fibers (left half of the right eye)
2
3
4
5
6
right half of each retina goes to the left LGN
same eye fibers (right half of the left eye)
other eye fibers (right half of the right eye)
Tectopulvinar Pathway
M-cells send axons to the tectum of the midbrain
creates movements to orient
by shifting the eye toward a certain stimulus
superior colliculi send info to thalamus
send further to temporal lobe
Axons from P-cells
3
4
5
6
Axons from M-cells
2
1
allows the brain to distinguis between information of the two eyes
allows brain to distinguish between information of M and P cells
Magnocellular layers
Parvocellular layers
Process color and form
process movement