Podcast
Questions and Answers
Where do ganglion cell axons end?
Where do ganglion cell axons end?
- In the primary visual cortex
- In the optic nerve
- In the optic chiasm
- In the lateral geniculate nucleus (LGN) of the thalamus (correct)
What is the major target of the optic tract?
What is the major target of the optic tract?
- Primary visual cortex
- Optic chiasm
- Lateral geniculate nucleus (LGN) of the thalamus (correct)
- Optic nerve
How does the LGN segregate M and P Ganglion cell types?
How does the LGN segregate M and P Ganglion cell types?
- Based on the intensity of the visual stimuli (correct)
- Based on the orientation of the visual stimuli
- Based on the size of the visual stimuli
- Based on the color of the visual stimuli
What are the receptive fields (RFs) of LGN cells?
What are the receptive fields (RFs) of LGN cells?
Where do axons from the LGN go?
Where do axons from the LGN go?
How do ganglion cell axons form the optic tract?
How do ganglion cell axons form the optic tract?
What does the LGN serve as?
What does the LGN serve as?
How is info from the optic tract taken in the LGN?
How is info from the optic tract taken in the LGN?
Flashcards
Ganglion cell axon termination
Ganglion cell axon termination
The axons of ganglion cells end in the lateral geniculate nucleus (LGN) of the thalamus.
Optic tract target
Optic tract target
The major target of the optic tract is the lateral geniculate nucleus (LGN) of the thalamus.
LGN M/P segregation
LGN M/P segregation
The LGN separates M and P ganglion cell types based on how intensely the visual stimuli are.
LGN receptive fields
LGN receptive fields
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LGN axon pathway
LGN axon pathway
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Optic tract formation
Optic tract formation
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LGN function
LGN function
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LGN input projection
LGN input projection
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Study Notes
Optic Tract and Lateral Geniculate Nucleus (LGN)
- Ganglion cell axons end in the lateral geniculate nucleus (LGN) and the superior colliculus.
- The major target of the optic tract is the LGN.
Lateral Geniculate Nucleus (LGN) and Ganglion Cell Types
- The LGN segregates M and P ganglion cell types by responding to different types of stimuli.
- M-ganglion cells project to magnocellular layers in the LGN and respond to low-contrast, fast-moving stimuli.
- P-ganglion cells project to parvocellular layers in the LGN and respond to high-contrast, slow-moving stimuli.
Receptive Fields (RFs) of LGN Cells
- LGN cells have circular receptive fields with center-surround organization.
LGN Outputs
- Axons from the LGN project to the primary visual cortex (V1) via the optic radiations.
Formation of the Optic Tract
- Ganglion cell axons form the optic tract by converging at the optic chiasm and projecting to the LGN and superior colliculus.
Function of the LGN
- The LGN serves as a relay station between the retina and the visual cortex, processing and transmitting visual information.
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