Primary visual cortex (V1)

Question 1

where is the primary visual cortex (V1) located

Answer 1

occipital lobe

Question 2

what is another name for V1

Answer 2

striate cortex

Question 3

what are ocular dominance columns

Answer 3

present in V1 (why its called striate cortex)
- inputs from each eye arrive in an alternating pattern (left, right, left, right)

Question 4

where do inputs into V1 arrive

Answer 4

layer 4 neurons predominantly

Question 5

where do ouputs from V1 leave

Answer 5

layers 2, 3, and 6

Question 6

what does V1 do primarily

Answer 6

process edge info
- first step in processing vision

Question 7

when is there the highest firing rate in V1

Answer 7

when the stimulus lines up with the receptive fields preferred angle

Question 8

what is the ice cube model for V1

Answer 8

shows ocualr dominance columns on one side and orientation selectivity columns on the other (preferred angle)

Question 9

what is the pinwheel model for V1

Answer 9

all possible orientations are represented and arranged with repeating pinwheel configurations
- some areas only code for one specific edge preference

Question 10

what do V1, V2, V4, and IT recognise

Answer 10

V1 = edges
V2/V4 = shapes
IT = highest level of object processing
stored in hippocampus

Question 11

what causes object recognition

Answer 11

converging pathways
- multiple V1 neurons that converge onto a V2/V4 neuron