PNB 2XB3 - Central Vision Questions And Answers Rated A+ New Update Assured Satisfaction
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Module
PNB 2XB3 - Central Vision
Institution
PNB 2XB3 - Central Vision
For an on-center ganglion cell, what causes it to maximally fire? - ️️light in the
center and darkness in the surround
superchiasmatic nucleus - ️️part of the hypothalamus, which regulates circadian
rhythms - some axons from the retina go here
explain the retinotopic/visuotopic map of t...
PNB 2XB3 - Central Vision
For an on-center ganglion cell, what causes it to maximally fire? - ✔️✔️light in the
center and darkness in the surround
superchiasmatic nucleus - ✔️✔️part of the hypothalamus, which regulates circadian
rhythms - some axons from the retina go here
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
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 cones can be of different types
(red,green,blue...)
fixating the eyes on an object - ✔️✔️turning the eyes so that the image falls on the
fovea of each eye
monocular vision portion of the visual field - ✔️✔️areas that only one eye can see
binocular visual field - ✔️✔️a region of the visual field seen by both eyes
a view in the left VISUAL FIELD is sent to which side of the occipital lobe? - ✔️✔️the
right side
macula - ✔️✔️center of vision
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 - ✔️✔️area in the brainstem to control pupil dilation (unconscious) - some
axons from the retina go here
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