L12.2 - Perception

What are the three types of cones people have

• S-cone

• M-cone

• L-cone

• A-cone

S-cones are most sensitive to what colour

• blue

• white

• green

• red

M-cones are most sensitive to what colour

• blue

• white

• green

• red

L-cones are most sensitive to what colour

• blue

• white

• green

• red

T/F? People that are trichromat are also known as colour-blind

• T

• F

What is trichromatic theory of colour vision

• The theory that colour vision is influenced by the wavelength of sound waves entering the ear

• The theory that colour vision is determined by the presence of black and white photoreceptors in the eye

• The theory that colour vision is based on four primary colours: red, yellow, green, and blue

• ability to distinguish between different wavelengths depends on the operation of three different kinds of cone receptors, each with a unique spectral sensitivity

What is opponent process theory

• The theory that colour vision is based on the shade of pink

• Colour vision is caused by opposing responses generated by blue and yellow and by green and red

• The theory that colour vision is produced by the interaction of black and white

• The theory that colour vision is produced by different shades of grey

Which is the correct theory for interpretation of colour? Trichromatic or opponent process theory?

• Opponent process theory

• Trichromatic theory

• Both - trichromatic explains input while opponent process theory explains output

T/F? The image of an object on the retina gets smaller as the object gets farther away

• T

• F

All else being equal, perceived size is determined by what

• retinal image size

• trichromatic theory

• opponent process theory

• how big the iris is