Primary visual cortex

Question 1

The primary visual cortex is

Answer 1

Contralaterally represented

Question 2

Upside down

Answer 2

1. Upper visual field processed in lower primary cortex

2. Lower visual field processed in upper visual cortex

Question 3

Central - peripheral

Answer 3

1. Central visual field processed in posterior primary visual cortex
2. Peripheral visual process in anterior primary visual cortex

Question 4

6 layers

Answer 4

1. layer 4 receives input from magno and parvocellular areas of lateral geniculate
2. layer 2 and 3 receive input from koniocellular

Question 5

E. visual field is represented in a topographic map on the cortex

Answer 5

1. spatial arrangement in visual field is maintained in cortex
2. But is disproportionately represented
   i. 25% of primary visual cortex process info from fovea
   ii. Fovea represents very small portion of visual field

Question 6

Primary visual cortex is composed of

Answer 6

numerous modules each of which processes information for color, form, and movement in discrete areas

Question 7

Damage

Answer 7

blind sight or cortical blindness

Question 8

V1 projects to V2, which is an

Answer 8

area of extrastriate cortex

Question 9

V1 blobs ->

Answer 9

thin stripes - color

Question 10

V1 interblobs ->

Answer 10

• > thick strips=form

- >pale strips=movement

Question 11

V2 neurons have larger receptive fields than V1, which suggests

Answer 11

V2 neurons receive input from several V1 neurons