Skip to main content

Why do we see illusions? - Mark Changizi


5,058 Questions Answered

TEDEd Animation

Let’s Begin…

Why can’t our extremely complex eyes render simple optical illusions? Surprise, surprise -- it comes back to the brain, which has only evolved to encounter natural stimuli. At TEDYouth 2012, Mark Changizi explains how the brain reckons with optical illusions.

When light hits your eye, how long does it take for your brain to perceive what you are actually seeing?

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Mark Changizi

More from Mind Matters