Test 2 - Lecture 5 (Visual Perception)

Question 1

extensive overlap between the receptive fields of adjacent ganglion cells; with a _______ of ON center and OFF center cells

Answer 1

homogeneous intermixing

Question 2

nasal field of the contralateral eye project to layers __,__,__ of the lateral geniculate nucleus

Answer 2

1,4,6

Question 3

temporal field of the ipsilateral eye project to layers ____,__,__ of the lateral geniculate nucleus

Answer 3

2,3,5

Question 4

layer IV receives input from the

Answer 4

lateral geniculate nucleus

Question 5

out from layer IV neurons converge upon 2nd order neurons in layers

Answer 5

III and II

Question 6

2nd order neurons within the primary visual cortex are tuned to detect a ______ within the visual field of a light-dark boundary

Answer 6

particular orientation

Question 7

s cones:

Answer 7

short wavelengths

Question 8

m cones:

Answer 8

medium wavelength

Question 9

l cones:

Answer 9

long wavelengths

Question 10

trichromatic color vision

Answer 10

s cones - 5-10%

ratio of m to l cones vary between people

Question 11

blobs

Answer 11

groups of neurons within the primary visual cortex that receive chromatic input from cones (color selective neurons)

Question 12

orientation preference

Answer 12

responsive to spatial orientation

Question 13

ocular dominance

Answer 13

comparison of input arising from the same point in the visual field from the right and left eye -> depth perception