Friday, June 21, 2013

Notifiblog: How Stuff Works Thursday! (on Friday!)

Yesterday, I was swamped and stumped. Couldn't settle on a topic for HSWThursday. I think I found something to remedy this situation: tetrachromacy!

Tetrachromacy is the ability to see colors using four types of cone cells in the eye. Most humans are trichromats.

We learn about three primary colors and their amazing combination qualities when we are very young. The fourth cone a tetrachromat human possesses is believed to lie between the red and green cones. (from Wikipedia) "One study suggested that 2–3% of the world's women might have the kind of fourth cone that lies between the standard red and green cones, giving, theoretically, a significant increase in color differentiation. Another study suggests that as many as 50% of women and 8% of men may have four photopigments and corresponding increased chromatic discrimination in comparison to trichromats."

(from Wikipedia) "In June 2012, after 20 years of study of women with four cones (non-functional tetrachromats), neuroscientist Dr. Gabriele Jordan identified a woman (subject cDa29) who was able to detect a greater variety of colors than trichromatic ones corresponding with a functional tetrachromats (or true tetrachromats)."

Can you imagine how she sees the world around her? Of course, it's normal to her. Makes one wonder if there are other functional tetrachromats amongst us who have no idea they have such an ability! What would we call those colors?

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