5 Written Questions

1. in response to what do cGMP levels fall, channels close, hyperpolarization, so no glutamate
2. what layer of the eye absorbs light and starts the signaling cascade
3. what percentage of the retina corresponds to 50% of the visual cortex to tiny bit of visual field, a lot of cortex analyzes this
4. what layer of the eyes has around 100 million photoreceptors and so these need to be compressed so they can be sent to the brain, done by cells of the inner nuclear layer
5. what is the inability to see more than one item at a time and is caused by damage to parietal lobe, where whatever you focus on goes to the front and the rest is in the background

5 Matching Questions

1. lens
2. V2
3. inner segment
4. outer segment
5. object agnosia

1. a what focuses the image on the retina
2. b what part of the rods and cones are specialized made of discs of membranes
3. c what part of the visual system likes symmetry, thinks that light comes from above, and increased distance=increased size, and faces are convex
4. d what is when you have ventral stream damage and cant identify objects thru orientation alone
5. e what part of the rods and cones are the working part mitochondria and ribosomes

5 Multiple Choice Questions

1. what is the primary spot when info doesn't go to the lateral geniculate nucleus, does eye mvmt, lets you focus on moving object (inferior colliculus does auditory-they talk to each other hear something turn head)
   1. outer nucleus layer
   2. kupfler cells
   3. amacrine cells
   4. superior colliculus (tectum)
2. what is where you move mouth upside down and looks very unpleasent, but when face is upside down you don't face scan so the mouth and eyes appear normal
   1. thatcher effect
   2. photoreceptors
   3. outer segment
   4. optic tract
3. what part of the eye converts the image into the neural signal
   1. viagra
   2. rods
   3. retina
   4. blink
4. what takes the compressed signal and tries to recreate it, doesn't always do a good job
   1. surround
   2. visual cortex
   3. cones
   4. bipolar cells
5. what are packed tighly in the fovea and are the only type of photoreceptors here
   1. edges
   2. cones
   3. 1%
   4. V2/V3

5 True/False Questions

1. V2/V3 → damage to where can cause object agnosia, where you can make up items from working memory

   True        False

2. blink → what focuses the image on the retina

   True        False

3. lateral geniculate nucleus → almost all information from the eyes goes where, has 6 layers,

   True        False

4. magnocellular → what 2 layers of the lateral geniculate nucleus has input from m-cells (RGC cells) that synapse here

   True        False

5. retinal pigmented epithelium → what is the outer part of the eye that absorbs light and increases visual acuity

   True        False