As a result, purple and magenta are known as "nonspectral" colors, because they don't really exist as actual electromagnetic ...

The Human Brain in Color This video lets you peek inside the human brain, highlighting the neuronal fibers that enable communication across the brain. This communication is vital to all brain ...

The brain then determines what color you are looking at by comparing the differences in signal strength, allowing us to see up to a million colors. When you look at in-between colors ...

To compensate, the brain bends the spectrum into a circle, making the two extremes meet at purple. It’s an illusion of physics and neuroscience that makes us think we see a nonspectral color .