lecture 15

Question 1

T/F
info from both eyes are combined in V1

Answer 1

True

Question 2

if a visual disturbance affects both eyes, the damage is where?

Answer 2

primary visual cortex

Question 3

if a visual disturbance affects only one eye the damage is where?

Answer 3

the eye, retina, or optic nerve

Question 4

scotoma is what and why

Answer 4

a tiny blind spot caused by damage to a small part of the visual cortex

Question 5

if you damage a little spot on the bottom left area of V1 of the right hemisphere, what would happen

Answer 5

you would get a scotoma in the left fov, in the upper right corner

Question 6

are scotomas noticable

Answer 6

not usually, your brain usually fills in the blind spots since your eyes are always moving

Question 7

macular sparing

Answer 7

central part of your fov is usually spared from damage to the visual cortex because its on the inside of the VA, not near the edge of the brain

Question 8

blind sight

Answer 8

can’t see, have a blind spot or something, but can “feel” when stimuli is in that area

Question 9

how might blind sight work

Answer 9

damage to V1 but other areas can still function sort of without damage and still talk to each other, bypassing the loss

Question 10

can you lose your ability to imagine colour

Answer 10

yes, and dream in it

Question 11

optic ataxia

Answer 11

deficit in visually guided movements like reaching

Question 12

apperceptive agnosia

Answer 12

object agnosia in which a basic feature of an object, like colour or motion, is failed to be recognized

Question 13

simultagnosia

Answer 13

unable to perceive more than one object at once

Question 14

associative agnosia

Answer 14

can perceive an object but not recognize it, due to damage to the ventral stream

Question 15

apperceptive agnosia and simultagnosia are usually from damage where

Answer 15

bilateral damage to lateral aspects of the occipital lobe

Question 16

prosopagnosia is what and where is damage

Answer 16

inability to recognize familiar faces including their own, damage to the right occipitotemporal junction/region

Question 17

alexia is what and where is damage

Answer 17

difficulty or inability to read, damage to the left occipitotemporal region, left fusiform gyrus, and lingual area

Question 18

mental rotation of objects uses what areas

Answer 18

right hemisphere dorsal stream

Question 19

hemianopia

Answer 19

half no vision (half of fov is gone)

Question 20

right homonymous hemianopia

Answer 20

right fovs in both eyes is gone