2.3

Question 1

Where do gangolin cells send info to and where does it receive info from

Answer 1

Sends info to the CNS (firing action potential) and receives it from photoreceptors

Question 2

What happens if you shine light in the peripheral vision

Answer 2

You will get inhibition

Question 3

True or false

Gangolin cells receptors are filed in the LARGEST of units on the retina

Answer 3

False they are filed in the SMALLEST of units

Question 4

What neurotransmitter is released from photoreceptors and bipolar cell

Answer 4

Glutamate

Question 5

When glutamate is release from a bipolar cell onto a gangolin cell what type of response happens

Answer 5

Excitatory

Question 6

If you shine light in the middle of the eye what type of response do you get

Answer 6

Excitatory

Question 7

If you shine light on the outside of the eye what type of response do you get

Answer 7

Inhibition

Question 8

In the dark your do photoreceptors hyper polarize or depolarize and what does it cause

Answer 8

Depolarize and open sodium channels

Question 9

In the light do photoreceptors hyper polarize or depolarize and what does it cause

Answer 9

Hyperpolarize and sodium channels close

Question 10

What happens if you stimulate the center of vision

Answer 10

You decrease release of neurotransmitter

Question 11

What happens if you decrease neurotransmitter

Answer 11

It becomes inhibited

Question 12

What does light stimulation cause in relationship to firing range

Answer 12

Decreases firing range

Question 13

True or false

Light stimulation ALWAYS decreases neurotransmitter

Answer 13

True

Question 14

What do horizontal cell do

Answer 14

Sharpen contrast in vision

Question 15

Do on-bipolar cells get excited or inhibited with light stimulation

Answer 15

Excited

Question 16

Do off-bipolar cells get excited or inhibited with light stimulation

Answer 16

Inhibited

Question 17

What separates you vision the retina and which is medial and lateral

Answer 17

Nasal-medial

Temporal-lateral

Question 18

Which side of the brain does temporal info go

Answer 18

The same side of your brain

Question 19

Which side of the brain does nasal info go to

Answer 19

Opposite side of the brain

Question 20

Where is lateral geniculate and what’s its function

Answer 20

In the nucleus in the thalamus and receives concussion info

Question 21

Where is pretectum and what’s its function

Answer 21

It’s in your midbrain and involves light stimulation

Question 22

What’s the function of superior colliculus and what’s it important for

Answer 22

Is in charge of very quick responses and important in saccadic eye movement

Question 23

What is saccadic

Answer 23

Very quick eye movement

Question 24

What is saccadic eye movement mediated by

Answer 24

Frontal eye field

Question 25

What does left monocular vision field contain

Answer 25

Contains temporal and nasal superior and inferior retina

Question 26

What is the largest portion of the cortex

Answer 26

Macula

Question 27

True or false

If you have a lesion under your cortex will you vision remain normal

Answer 27

True

Question 28

What’s the function parvocelluar gangolin cell

Answer 28

Small receptive fields (high resolution and static detail and from cortex vision)

Question 29

What’s the function of magnocelluar gangolin cell

Answer 29

Big receptive field (come from peripheral, not good resolution, light sensitive, and respond well to moving stimulate)

Question 30

How many photopigments do comes have and where are they

Answer 30

They have 3 and in the center of your vision