Vision Flashcards
What is wavelength?
The distance between the peak of a wave (light/sound) to the next peak. Determines color in light`
What is a hue?
The dimension of color that is determined by the wavelength of light.
What is intensity?
The amount of energy in a light or sound wave. Determined by wave’s amplitude.
What is the pupil?
The adjustable opening of the eye through which light enters.
What is the iris?
A ring of colored muscle of the eye that controls the amount of light that enters through.
What is the lens?
The transparent structure behind the pupil that focuses light to the retina.
What is accommodation?
the process by which the eye’s lens is changed to focus far or near objects.
What are rods?
Retinal receptors that detect black, white and gray. Necessary for peripheral vision.
What are cones?
Retinal receptors that are concentrated near the center of the retina that functions in well-lit conditions. Detects fine detail and color.
What are optic nerves?
The nerve that carries neural impulses from the eye to the brain.
What is blindspot?
The point at which the optic nerve leaves the eye. No receptor cells are present in this area.
What is fovea?
The centra focal point in the retinal, around where the cones are clustered.
What are feature detectors?
Nerve cells in the brain that respond to specific stimulus such as shape, angle or movements.
What is parallel processing?
The processing of many aspects of a problem simultaneously.
What is the Young-Helmholtz trichromatic theory?
The theory that the retina contains three different color receptors - RGB (Red, Green, Blue) - which when stimulated in combination can produce the perception of any color.
