W6 - Hearing / Vision

Question 1

Lateral inhibition

Answer 1

a neuron’s response to a stimulus is inhibited by the excitation of a neighboring neuron.

Question 2

Trichromatic (Young-Helmholtz) Theory

Answer 2

3 cone types can discriminate 16 million colours

Question 3

Herring’s Theory

Answer 3

White vs Black; Red vs Green; “Yellow” vs Blue

Question 4

The retinex theory - (Edwin Land)

Answer 4

we see the results of comparisons made across spaces, allowing us to perceive constancy despite stimulus change.

Question 5

The lateral geniculate neclues

Answer 5

nucleus in the thalamus that receives visual information from the retina and sends it to the visual cortex for processing

Question 6

Parvocellular pathway

Answer 6

carries high spatial frequency information; low temporal frequency information

e.g., small, slow, resolution, colour

Question 7

Magnocellular Pathway

Answer 7

low spatial frequency; high temporal frequency

e.g., large, fast things, moving things

Question 8

Spatial frequency analyzers

Answer 8

signal that carries information from visual, hearing. How basic building blocks of information translating into information

Question 9

low spatial frequency

Answer 9

encodes the luminance around, overall shape, large objects.

Question 10

high spatial frequency

Answer 10

fine spatial structure of the world, small objects and detail

Question 11

Neurons of secondary visual cortex

Answer 11

surface processing, perception of perceptive edges become subjective edges