Humans Can See Several Thousand Shades of Color but Have

question 14

Multiple Choice

Humans can see several thousand shades of color but have cone photoreceptors that aresensitive to only three (perhaps four) wavelengths of light. What is the best explanation for why we see so many colors?

• A) Color perception is achieved by activation of various combinations between the three cone types.
• B) Color perception is dependent on the millions of rods as well as cone photoreceptors.
• C) Colors are added and enhanced in the primary visual cortex of the brain.
• D) Shades of color are purely psychological and learned by association with age, infants only seeing in black and white.

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