Visual Development - A Scaffold, Tuned by Experience
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14 Terms
Lateral Geniculate Nucleus
Perception of Objects
Superior Colliculus
Control of Eye Movements
Pretectum
Pupillary Light Reflex
Suprachiasmatic Nucleus
Diurnal rhythms and hormonal changes
What is the LGN role?
gates the signal from retina to cortex
How many layers of the LGN are there?
6 layers
How many magnocellular layers are there?
two
How many parvocellular layers are there?
four
How does foveal differentiation change after birth?
receptor density in the fovea increases
How do cones change after birth?
outer segments lengthen, foveal cones thin and elongate
How does pit formation change after birth?
ganglion cells and the inner nuclear layer migrate away, and the foveal pit develops
How do parvocellular cells organize after birth?
cell bodies grow rapidly from birth to 6 months, reaching adult size by 1 year
How do magnocellular cells organize after birth?
slower growth, reaching adult size by 2 years
How do dendritic spines organize after birth?
peak at 4 months after birth, then fall to adult levels by 9 months