Chap 3

Question 1

Retina

Answer 1

Back of the eye
Photoreceptors - rods and cones
Phototransducion - break pigment then bind to protein

Question 2

Bipolar cells

Answer 2

Conduct singal from photoreceptors to ganglion cells

Question 3

Ganglion cells

Answer 3

Pass info to the optic nerve

Question 4

Rods

Answer 4

Senstivie to light, not good for color

Question 5

Cones

Answer 5

Responsive to wavelegth, color good in bright enivorments
More sensitive to details than rods
1 to 1 bipolar to ganglion

Question 6

Fovea

Answer 6

Photorecpetors

Cones are concentrated here (central vision)

Question 7

Ganglion cell

Answer 7

Responds to light in a specific receptive field

Center surrounded receptive field

Question 8

Center surround recpetive field

Answer 8

On center light in center decrease firing rate
Off - light around increased firing rrate
Off- light on all weak response
Off- nolight bseline firing rate

Ganglion cell

Question 9

Lateral geniculate nucleus

Parvocellular
Magnocellular

Answer 9

Axons from retinal ganglion cells sent to thalamus

Cells get input from cones
Cells get input from rods

Question 10

V1

Answer 10

Primary visual cortext: respond to light of a speicifc orientation
Columnar orgnaization

Question 11

Depth percpetion

Answer 11

Binocular dispary - eyes have differnt view of the word

Use stereopsis to help defer 2d

Question 12

V2
3 4 5
Inferotemporal cortex

Answer 12

Direct connection from v1, retinotopically with larger recpetive fields
3 4 5 abstract stimuli - shapes textures movement
Inferotemporal cortex- faces, scenes, objects

Question 13

Ventral stream

Answer 13

What stream v1 2 3 4

Question 14

Dorsal stream

Answer 14

1 2 3 5

Where and how