lecture 14

Question 1

function and place in the brain of the occipital lobe

Answer 1

vision, and posterior of brain

Question 2

function of and location of V4

Answer 2

colour processing, sits below and behind V3, ventral

Question 3

function and location of V5

Answer 3

motion area and lateral above occipital lobe

Question 4

primary visual cortex function and location

Answer 4

process colour, form, and motion, surrounds the calcarine sulcus in the occipital lobe

Question 5

blobs vs interblobs

Answer 5

blobs - colour
interblobs - cells between blobs, form and motion
makes up V1

Question 6

what is the secondary visual cortex made of

Answer 6

thick, thin, and pale stripes

Question 7

function of thick, thin, and pale stripes

Answer 7

thin - colour
thick - form
pale - motion

Question 8

where does visual processing start

Answer 8

V1, then projects to V2, then to other major visual areas

Question 9

the visual field can be divided into ____ (halves, thirds, quadrants, sixths)

Answer 9

quadrants (contralateral)
- bottom fov goes to dorsal (top) visual cortex, top fov goes to ventral visual cortex

Question 10

dorsal stream is visual guidance of ____

Answer 10

movement, where and how stream

Question 11

ventral stream is _____ perception

Answer 11

object and motion

Question 12

Superior Temporal Sulcus is ___ perception

Answer 12

object and motion, ventral stream

Question 13

what is the STS stream good for and why

hint: location is why

Answer 13

lands in secondary facial area and good for movement so its best for facial recognition in motion

Question 14

V3 function

Answer 14

dynamic form processing, shapes of objects in motion

Question 15

object agnosia

what is it and where is the damage

Answer 15

blindness to object categorization, damage to lateral occipital area

Question 16

achromatopsia

Answer 16

blind to colour, only see in black and white, damage to V4

Question 17

akinetopsia

Answer 17

blind to motion, see in stopframe, damage to MT (V5)

Question 18

higher visual areas are more ____ but can still ____, whereas V1 and 2 are ____ and process ____

Answer 18

specialized, integrate multiple aspects, heterogenous, all types of info

Question 19

dorsal stream is ____ for ____

Answer 19

vision for action, where and how

Question 20

T/F
in the dorsal stream movement can be done without attention

Answer 20

True, it can be done with or without attention or awareness

Question 21

processing visual info about a target in order to catch it requires interaction of multiple ____s, largely where?

Answer 21

visual areas, in parietal lobe and dorsal stream

Question 22

action for vision example

Answer 22

when you look at someones face you typically focus on the parts of their face that move - the eyes and mouth
when a subject performs mental rotation they often move their eyes

Question 23

primary function of vision

Answer 23

to guide movement, not to recognize objects

Question 24

how does info from V1 get to parietal areas

Answer 24

the dorsal stream projects info for visually guided movements to the parietal areas

Question 25

damage to the Lateral Occipital Area (LO)

Answer 25

can shape hand to grasp an object they cannot see

Question 26

dorsal stream damage

Answer 26

can see objects but cannot reach for them or grab them

Question 27

dorsal stream provides ____ action

Answer 27

real-time

Question 28

when the brain is acting on visual info (not just looking at an object), what neurons are active

Answer 28

posterior parietal visual neurons

Question 29

when asked if two faces are the same, what stream is active

Answer 29

ventral

Question 30

when asked where on a face a dot was, what stream is active

Answer 30

dorsal