Model of Opposite Color Signals in the Opponent Theory from "The True-Color Book"

Opponent Theory

Ewald Heering theorized that the cones in our eyes differentiated between opposite colors and sent their composite signals to the brain. It was a daring leap of reasoning, but it was later established that individual cones have mostly a single color sensitivity.


Illustration by A. Michael Shumate     Media: Illustrator and Photoshop

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