3. Visual Perception Flashcards
1
Q
What is brightness adaptation?
A
Changing sensitivity to brightness to protect photoreceptors from damage
2
Q
How does pupil size adapt?
A
Constricts in bright light to protect the eye, and dilates in darkness to let in more light
3
Q
How does the use of rods and cones adapt?
A
Rods are used in darkness, cones in light
4
Q
What is photopigment bleaching?
A
Chemicals in rods and cones stop working in high or low intensity light levels, therefore becoming inactive and are protected from light damage.
5
Q
What is brightness adaptation level?
A
The current sensitivity level of the visual system for a given set of conditions.
6
Q
What is an important consideration when displaying images?
A
The eye’s ability to discriminate intensities at a given adaptation level
