Laws

Question 1

What is the Dowling-Rushton relationship?

Answer 1

bleached photoproducts are responsible for log sensitivity change during dark adaptation

Question 2

What is Ricco’s law?

Answer 2

increasing the size of a stimulus will decrease threshold (within critical area)

Question 3

What is Bloch’s law?

Answer 3

increasing the time a stimulus is present for decreases the threshold by half (within critical duration)
if luminance decreases, increased duration needed to retain same threshold level

Question 4

What is the Ferry-Porter law?

Answer 4

an increase in illumination results in an increased critical flicker function

Question 5

What is the Granit-Harper law?

Answer 5

an increase in stimulus size results in an increased critical flicker function

Question 6

What is the Stiles-Crawford effect?

Answer 6

cones only respond to light straight on

Question 7

What are the Gestalt laws?

Answer 7

Laws that explain why we perceive images within visual illusions
Law of simplicity
Law of similarity
Law of proximity
Law of good continuation
Law of common fate
Law of familiarity