PNB 2XB3 - Central Vision Questions and Answers | Latest Update 2024/2025
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Module
PNB 2XB3
Institution
PNB 2XB3
For an on-center ganglion cell, what causes it to maximally fire?
~~> light in the center and darkness in the surround
What is the spontaneous level of activity or baseline for a ganglion cell?
~~> when the entire field is in the dark
color opponency
~~> the center and surround con...
explain the retinotopic/visuotopic map of the primary visual cortex
✓ ~~> the macula takes up a disproportionally large space in the cortex,
compared to the peripheral field
consists of the axons from both the nasal and temporal retina of one eye
✓ ~~> optic nerve
the nasal pathways decussate through the
✓ ~~> optic chiasm
what axons are in each optic tract?
✓ ~~> temporal retina axons of the ipsilateral eye, and the nasal retina
axons of the contralateral eye
contralaterality in the visual system can be seen starting in the
✓ ~~> optic tract
pretectum
Master01 | September, 2024/2025 | Latest update
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