Visual pathways

Question 1

Optic nerve to

Answer 1

Optic chiasm

Question 2

Optic chiasm to

Answer 2

either lateral geniculate or superior colliculus

Question 3

If the optic chiasm goes to the lateral geniculate, where then does it go?

Answer 3

Primary visual area of the occipital lobe (area 17 or V1)

Question 4

From V1 to

Answer 4

Topographic rep. in cortex - visual field is rep. contralateral, upside down, center of field posteriorly and peripheral field anteriorly

Question 5

If the optic chiasm goes to superior colliculus, where then does it go?

Answer 5

Lateral posterior pulvinar of thalamus

Question 6

From lateral posterior pulvinar of thalamus to

Answer 6

Secondary visual area of occipital lobe (area 18 or V2)

Question 7

Other visual pathways go to___&___to mediate things like…

Answer 7

other visual pathways go to brain stem nuclei and frontal lobes to mediate things like eye movements, circadian rhythms, daily wake-sleep cycles

Question 8

___&___information coded separately in the eye is…

Answer 8

transmitted separately all the way to the cortex

Question 9

Other aspects of vision (shape, movement, depth) are processed in

Answer 9

Separate rep. of the visual field in the cortex

Question 10

Secondary visual area (are 18, V2) appears to do some integration of

Answer 10

visual input to produce a unified composite of the separate dimensions of visual image

Question 11

With progression through the visual pathway, neurons respond only to

Answer 11

increasingly complex aspects of stimulation…
- e.g. a bar of light at a specific location and orientation in primary visual area vs. a face, hand, hat, car or other object in tertiary visual cortex