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Mind & PerceptionVisual Neuroscience

The Afterimage Flag

Stare at the wrong colors and the right ones appear

A flag painted in the wrong colors can make you see the right ones on a blank wall. Where do those colors come from?

You'll find out

  • What 20 seconds of staring does
  • Why the ghost changes its colors
  • Why it grows on a faraway wall

Why it matters

What you see is never just what's in front of you: it also depends on what your eyes were doing a moment ago.

About 3 min6 interactive slides · 5 questionsLesson 83 · Zone 10

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