Processing Shapes in V1

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What is the primary projection area in the occipital cortex that receives input from the lateral geniculate nucleus (LGN)?

V3A

V1 (correct)

V4

V2

In V1, what does the 'blob pattern' represent?

Motion

Color and form

Form and motion

Color (correct)

What gives the occipital cortex distinctive patterns of 'blob' and 'interblob' in V1?

Cortical representation

Axons from magnocellular layers

Occular dominance columns

Input from LGN (correct)

Which area in the occipital cortex is responsible for processing motion mainly?

V5 Signup and view all the answers

What is the main function of thin stripes in V2 of the occipital cortex?

Processing color Signup and view all the answers

Which neurons have larger receptive fields in the visual processing stream?

Neurons with more cortical representation Signup and view all the answers

'Thick stripes' in V2 of the occipital cortex are associated with processing which aspect of visual information?

Motion Signup and view all the answers

What is the rate of axon development labeled as 'fast' in the text?

~10 mm/day Signup and view all the answers

When does dendritic arborization typically begin according to the text?

Prenatally Signup and view all the answers

What is the approximate number of synapses in the human brain according to the text?

~100 trillion Signup and view all the answers

In what time frame does synaptic density double in the visual cortex after birth?

Between 2 and 4 months Signup and view all the answers

At what stage is cell differentiation essentially complete according to the text?

At birth Signup and view all the answers

What do neurotropic chemicals do in relation to growth cones?

Attract or repel them Signup and view all the answers

At what stage does dendrite development exceed axon development in speed?

~2 years after birth Signup and view all the answers

When does synaptogenesis, the formation of synapses, primarily occur?

During infancy Signup and view all the answers

What is the rate of slow axon development mentioned in the text?

~1 µm/day Signup and view all the answers

'Branching' in dendritic arborization typically occurs up to how many years after birth?

~2 years old Signup and view all the answers