• Decrease Font Size
  • Decrease Font Size
  • Decrease Font Size
  • Bookmark and Share

Cool Brain Tricks

Autostereograms
Can you see 3D images hidden in patterns?
Scrambled Text
Is it true that people can read scrambled text as long as the first and last letters are in the right position? Find out if your brain can do it here!
Missing Letters
How many "f"s are in this block of text? You may be suprised to find out.

The Hermann Grid
You can see black dots on this grid—but what happens when you try to count them?
In Depth
Decide which monster looks larger—and find out why.

Convex or Concave?
What makes some 2D circles look concave, and others convex?

What Do you See?
Different people see different things in this picture. What do you see?

Never-ending Scales
Put on your headphones or turn on your speakers and listen to this sound pattern. It's called a Shepard scale.