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Flashcards in Vision Deck (6)
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Light waves

Electromagnetic waves that stimulate receptors in the eye.

1

Intensity (brightness)

Amount of energy per unit of time (brightness)

2

Wavelength (color)

Distance between two wave crests.

3

Trichromatic theory (young-helmholtz)

Three types of cones detect three wavelengths of light. Blue, green, and read. This theory does not explain negative afterimages.

4

Negative after image

If you stare at one color and then look at whitespace you see a color after image in the complementary hue of the original stimulus.

5

Opponent-process theory

Receptor cells are arranged in pairs: red, green, blue, yellow, and black, white. If one color is stimulated, the other is inhibited.