Thursday, October 2, 2008

Optical Illusions

Optical illusions are fun and fascinating.

You've probably already seen ones where there are two interpretations for a single image, such as this one, which could be interpreted as either a vase (or candlestick) or two faces:


Or maybe you've seen ones like this, where your peripheral vision gives movement to a repeated pattern:

There are also the ones that play tricks on your perception of length or distance.

And, of course, the ones that seem to do impossible things with shading or shadows. (This one will blow your mind!)

But this is one I haven't seen before, and maybe you haven't either:


This tiny dancer can indicate whether your Right Brain or Left Brain is dominant. Look at the dancer again -- which direction does she appear to be spinning? Clockwise or to the counter-clockwise?

If she's spinning clockwise, your Right Brain, the "creative" side of the mind, is dominating. If she's spinning counter-clockwise, your Left Brain, the "logical" side of the mind, is dominating.

Something interesting... When I look at her, she is spinning clockwise. Until I begin reading or typing, and then if I notice her using my peripheral vision she begins spinning counter-clockwise.

Which way is she spinning for you? Can you see her spin both directions, too?

P.S. Um, no idea why she's in the buff. Sorry about the nudity.

2 comments:

Imez said...

Are you sure the animation just doesn't change after a bit, have her go the other direction?

Really cool blog, by the way.

Sway Sovay said...

I thought maybe that, too, at first, Imez! But if you load the gif into an animation program it will show you that she's only spinning one direction, all the time.

When we see her change directions, that's just the other side of our brain subconsciously interpreting her turn in an opposite way. Pretty freaky, right?

I can flip back and forth if I concentrate -- I can watch her go one direction for as long as I want, then I can make her turn the other direction, or I can watch her pivot back and forth both directions, one after the other.

So cool!