Lec 12 - 3 - Visual

Question 1

these make up the outermost retina

Answer 1

rods/cones

Question 2

are there more cones or rods

Answer 2

rods

Question 3

cones for short wavelength

Answer 3

blue

Question 4

cones for medium wavelength

Answer 4

green

Question 5

cones for long wavelength

Answer 5

red

Question 6

near central area of the retina that has all cones and best vision

Answer 6

fovea

Question 7

disc in outer segment of rods has blank

Answer 7

rhodopsin

Question 8

rods have cation channels that are opened by high levels of blank which are present in the dark

Answer 8

cGMP,

Question 9

more light leads to blank open channels so there are blank signals when light increases in rods

Answer 9

fewer, less

Question 10

cones work similarly to rods but they have blank instead of rhodopsin

Answer 10

cone opsins

Question 11

disease leading to loss of peripheral vision and can lead to blindness

Answer 11

retinitis pigmentosa

Question 12

ganglion cells can have blank or blank responses

Answer 12

sustained, transient

Question 13

ganglion cell centers in the fovea are blank in degrees compared to ganglion cells in the periphery

Answer 13

smaller

Question 14

compared to the fovea, the periphery ganglion cells have more blank so it’s not as precise but it lets you see better in the dark

Answer 14

convergence

Question 15

90 percent of optic axons go to this nucleus

Answer 15

lateral geniculate

Question 16

there are blank of the lateral geniculate nucleus so cells with color selective responses wiill project to a different blank that is not color selective

Answer 16

layerrrrrrr

Question 17

brodmanns area of visual cortex

Answer 17

17 in occipital

Question 18

largest are in visual cortex is devoted to this part of the eye

Answer 18

fovea

Question 19

axons from lateral geniculate terminate in this layer of cortex

Answer 19

4

Question 20

most cells in layer four have blank receptive fields with center surround organization

Answer 20

circular

Question 21

cells in other layers respond best to blank

Answer 21

straight bars or edges

Question 22

all cortical cells are blank selective but only some are blank selective

Answer 22

orientation, directionally

Question 23

basic unit of striate cortex

Answer 23

orientation column

Question 24

where stream of vision is located here

Answer 24

parietal

Question 25

what stream of vision is located here

Answer 25

temporal