Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
What are the four types of ganglion cells? |
P type (Parvocellular), M type (Magnocellular), K cells (Koniocellular), Photosensitive ganglion cell (pRGC) |
|
|
What do P cells do? |
Respond to changes in color and lots of contrast |
|
|
How much percent of ganglion cells are P cells? |
80% |
|
|
What do M cells do? |
Respond to lower contrast stimuli, not sensitive to color, seem to relate dynamic data (movement and flicker) |
|
|
How much percent of ganglion cells are M cells? |
10% |
|
|
What do K cells do? |
Respond to moderate contrast, may be involved in color vision? |
|
|
How much percent of ganglion cells are K cells? |
About 10% |
|
|
What do pRGC cells do? |
They're non-image forming and may contribute to circadian rhythms |
|
|
How much percent of ganglion cells are pRGC? |
about 1% to 3% |
|
|
What is the lateral geniculate nucleus (LGN)? |
The part of the brain that maps out the images of each type of ganglion cell |
|
|
What are the names of and how many layers are in the LGN? |
2 magnocellular layers, 4 parvocellular layers, 6 total |
|
|
What does each LGN receive from each eye? |
Ganglion cells in one eye terminate in 1st three layers, the axons of the other eye in the other three |
|
|
Where are the K cells in the LGN? |
Situated between M and P layers |
