35 Questions
What happens to light from objects in the extreme periphery of the visual field at points A and F?
It is blocked by the nose and detected only in the ipsilateral eye
Where does the superior colliculus contain a complete visual representation?
Contralateral eye
How do RGCs from the nasal hemiretina project in terms of direction?
In an orderly manner to the contralateral side of the brain
Where do axons from RGCs that are activated by light from the same object converge?
On the same neurons in the superior colliculus
What can drive neurons at point B in the superior colliculus?
Inputs from both eyes
At which locations in the superior colliculus do cells respond to light input only from the contralateral hemiretina?
Points A and F
What happens when light from objects in the extreme periphery of the visual field reaches points A and F?
It is detected only in one eye
What happens to light input from objects in the extreme periphery of the visual field reaching points A and F?
It is blocked by the nose and detected only in the ipsilateral eye.
Where do axons from RGCs in either eye that are activated by light from the same object converge?
Superior colliculus
What type of representation of the visual field does the superior colliculus contain?
Complete contralateral visual representation
At what locations in the superior colliculus do cells respond only to light input from the contralateral hemiretina?
A and F
Which area of the brain receives orderly projections from nasal hemiretina's RGCs?
Contralateral side of the brain
What happens when neurons at point B in the superior colliculus are recorded?
Cells respond to light input from both eyes.
Where do RGCs from the temporal hemiretina project in terms of direction?
Ipsilateral side of the brain
What drives neurons at point B in the superior colliculus?
Light from objects located in the extreme periphery of the visual field.
What happens if neurons at points A or F in the superior colliculus receive light input?
They respond to light input only from the contralateral eye.
What can drive neurons at point B in the superior colliculus?
Light input from objects in extreme periphery of the visual field.
From which locations in the visual field is light blocked by the nose, preventing detection by the contralateral eye?
Peripheral vision
What is the main role of the superior colliculus in relation to visual processing?
Contains a complete visual representation of the contralateral visual field
Which statement accurately describes the pathway followed by RGCs from the nasal hemiretina?
Project to the contralateral side of the brain
At what point in the brain can neurons receive input from both eyes for light originating from the same object?
At point B in the superior colliculus
What happens at locations A and F in the superior colliculus regarding light input?
Cells respond solely to input from the nasal hemiretina
Which location receives input from objects in the extreme periphery that is detected only in one eye?
Nasal hemiretina
What can drive neurons at point B in the superior colliculus?
Input from both eyes responding to light from the same object
Which type of retinal ganglion cells project to the ipsilateral side of the brain?
Temporal hemiretina retinal ganglion cells
Which type of retinal ganglion cells project to the contralateral side of the brain?
Nasal hemiretina retinal ganglion cells
What is the purpose of the orderly point-to-point neuronal projections from the visual brain area to the visual brain area?
To maintain the orderly location of the retinal ganglion cells in the retina
What is the purpose of the visuotopic map in the superior colliculus?
To create a complete representation of the visual field
What happens to light input from objects in the extreme periphery of the visual field reaching points A and F in the superior colliculus?
The light is blocked by the nose
Where do axons from retinal ganglion cells that are activated by light from the same object converge?
In the superior colliculus
What type of retinal ganglion cells respond to light input only from the contralateral hemiretina?
Nasal hemiretina retinal ganglion cells
What can drive neurons at point B in the superior colliculus?
Light input from the contralateral hemiretina
Which area of the brain receives orderly projections from the nasal hemiretina's retinal ganglion cells?
Contralateral side of the brain
What is responsible for maintaining the orderly location of the retinal ganglion cells in the retina?
Orderly point-to-point neuronal projections
What is the purpose of the visuotopic map in the superior colliculus?
To produce an orderly representation of the visual field
Test your understanding of retinal processing and the concept of center/surround properties. Explore how antagonistic effects of light impact visual sensitivity and contrast perception. Practice questions on topics like On Center RGCs and light illumination contrasts.
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