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See Inside The Science of Perception

The Illusion of Love [Preview]

How do we fool thee? Let us count the ways that illusions play with our hearts and minds

ILLUSORY NEON HEART
Notice that the yellow fields inside the heart seem paler than the fields forming the contour of the heart, which appear to be a darker shade of yellow-orange. Right? Wrong. Actually all the yellow fields in the figure are identical. Any differences that you see are all in your mind. This effect is called neon color spreading, because it resembles the effect of the light spreading from a neon lamp. The neural underpinnings of this effect are not yet understood.

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