MORE LEFTY BRAIN-TEASERS

THURSTON'S HAND TEST
The left-handed brain's mastery of the visual has an important benefit - it can "see" three dimensionally. In Thurston's hand test, you are asked to identify which pictures are of left hands and which are of right hands. Your right-handed brain is at a loss to handle this problem, but your left-handed brain can actually rotate these drawings in imaginary space to solve the test - have a go!

KANIZSA'S TRIANGLE
Here's another example showing how your left-handed brain can even create things that don't exist. If you can see the white triangle - the one with its apex pointing up - it's because your left-handed brain has created that triangle to unify what is otherwise simply a collection of angles and PacMan shapes. There is, in fact, no white triangle there.