4. Vision - Extrastriate Cortex

Question 1

“midget” RGCs are also known as:

Answer 1

P cells (project to the parvocellular layers of the LGN)

Question 2

“parasol RGCs are also known as:

Answer 2

M cells (project to the magnocellular layers of the LGN)

Question 3

• small receptive fields
• sustained response
• low temporal resolution (increased visual acuity)
  these are all characteristics of:

Answer 3

midget cells

Question 4

• large receptive fields
• transient response
• high temporal resolution (decreased visual acuity)
  these are all characteristics of:

Answer 4

parasol cells

Question 5

midget cells are associated with:

Answer 5

form (looking at “what” something is)

Question 6

parasol cells are associeted with:

Answer 6

motion (not worried about “what” but “where”)

Question 7

destruction of the parvocellular layers of the LGN results in loss of:

Answer 7

form vision

Question 8

destruction of the magnocellular layers of the LGN results in loss of:

Answer 8

motion vision

Question 9

areas of V1 (particularly layers 2 and 3) that are rich in cytochrome oxidase

Answer 9

blobs

Question 10

blobs project to _____ in V2 (secondary visual cortex), and interblobs project to to _____ in V2

Answer 10

thin stripes, pale and thick stripes

Question 11

the thin stripes in V2 are associated with:

Answer 11

colour vision

Question 12

the pale stripes in V2 are associated with:

Answer 12

form vision

Question 13

the thick stripes in V2 are associated with:

Answer 13

motion vision

Question 14

why is motion said to be colour blind?

Answer 14

due to the separation of the magnocellular (M) and parvocellular (P) pathways in the cortex

Question 15

the “dorsal” stream of information from the visual cortex to the parietal lobe is concerned with:

Answer 15

motion

Question 16

the “ventral” stream of information from the visual cortex to the temporal lobe is concerned with:

Answer 16

colour and form

Question 17

go review the pathways on slide 349

Answer 17

oh my god why does making flashcards take forever

Question 18

the medial temporal cortex (area MT) is specialized for:

Answer 18

processing visual motion

Question 19

lesions to area MT result in:

Answer 19

very jerky and inconsistent tracking of moving objects

Question 20

is it possible for specific cells in area MT to prefer specific directions of motion?

Answer 20

yes

Question 21

integrates information from area MT and combines large receptive fields to make an even bigger receptive field

Answer 21

area MST

Question 22

area MST is specialized for:

Answer 22

processing “optic flow” motion

Question 23

the ventral temporal stream is specialized for:

Answer 23

form (a form is made of a series of edges)

Question 24

it is thought that the further down the ventral temporal stream that information travels, the more:

Answer 24

complex the forms

Question 25

the inferotemporal cortex is specialized for:

Answer 25

complex form processing

Question 26

respond to complex visual stimuli

Answer 26

"elaborate" cells in the inferotemporal cortex

Question 27

true or false: cells in the temporal stream are responsive to faces

Answer 27

true

Question 28

part of the temporal cortex specifalized for recognizing faces

Answer 28

fusiform face area (FFA)

Question 29

part of the temporal cortex specialized for responding to places

Answer 29

parahippocampal place area (PPA)

Question 30

part of the temporal cortex specialized for responding to bodies

Answer 30

extrastriate body area (EBA)

Question 31

the temporal cortex is modified by:

Answer 31

experience