Tuesday, October 16, 2007

Clockwise? Anti-Clockwise?

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What can you see? Clockwise rotation? Anti-clockwise rotation? Both?

This is an interesting test posted on the Daily Telegraph website, and it is purported to test whether you are a left-brained or right-brained person. But from my one semester of neuroscience, I would say that the left-brain / right-brain dichotomy thing is mostly bullshit. While there are indeed dominant spheres for language processing (most people are left-sided, some people are right-sided, even less are both-sided) as well as spatial perception (which is usually on the right side); the left-side = rational, right-side = emotional / linguistic / artistic theory is a hypothesis and has not been substantiated scientifically. It is often exaggerated in popular psychology and often is used to sell "boost your left brain" or "train to use both your brains" kind of pseudoscience stuff.

After some searching around, I discovered a few web pages which discusses this image and the left-brain-vs-right-brain issue in more detail:Interesting, huh?

Source: The Right Brain vs Left Brain via Facebook

12 comments:

jie ni said...

My half semester of "Psycholinguistic", including Language and Brain Lateralization.

Actually, only little known about development of language in the brain, and many things are unclear even a lot of researches have been done.

:P

ShouFarn said...

oh i seen this one before. I can now will the image to switch directions whenever i want.

wei liang said...

Well, I tried hard to change the direction but the image just seems to be turning in clockwise direction. Haha, I'm not good in spatial perception anyway. Anyway, I'd got equal scores for both brains in an IQ test taken some time ago.

bluez_aspic said...

The most 'left-brain' friend I have saw it rotating clockwise lolol

youngyew said...

Jie Ni: Yeah basically they do know certain parts of brain which are very important in speech and language (the most famous ones are Broca area and Wernicke area); but how it's being done is still largely unknown. :)

Shou Farn: Yeah you could sort of tell your mind to change the perception at will once you get the knack of it. Here's a challenge: try making it swing to and fro from left to right, but only in semicircle (i.e. no full revolution).

Wei Liang: Haha look harder, I think everyone is able to make it change direction. :D

Bluez: Yeah I saw it turning clockwise the first time too, but I am pretty sure I am the so-called left-brained guy. :D

sophisticatedsoul said...

I saw it turning anticlockwise the first time. Then suddenly it became clockwise. And after a few minutes, I came back to it, it was back to anticlockwise. Interesting indeed!

youngyew said...

:D It captivated me too when I first saw it. It's rare to see such unbelievable optical illusion, especially when you first saw it in one particular direction and then thought to yourself "How the hell do people see it spinning in the other direction". Then the big surprise when you manage to see the other direction by yourself.

Anonymous said...

Who did that!?? I actually only saw the clockwise direction because I kept looking at her rotation...and I think i didn't spend much time to observe...

But why I saw the changing pattern of rotation when I put my attention to your line just below the pic? Got ghost? Argh...can someone explain that? Did I have illusion or...the pic is set to move like that?

Alas, she is dark...

Anonymous said...

I know already...hehe, because she is in dark, and when your brain see it is turning around the clock, you try to set the right and left sides of the figure so you thought its turning clockwise!

Once you get distracted, you see the leg is changing direction because it's hidden in darkness. So your brain reset the left and right sides so you see it's turning the other way.

There's no intentionally devised change of motion; just because the thing is in dark, especially the hip part so you cann't tell which side is which!

Damned darkness!

Anonymous said...

Haha, I found a big secret in my life unintentionally from this post, although not directly...haha!

youngyew said...

Haha anonymous, you answered yourself before I had the chance to! :D

Su Yuen said...

Hey youngyew! Thanks for dropping by my blog!

Back to the post, I believe this test is more of a fun brain trick thing rather than an actual left/right brain test. A true brain-side test would require more than just an animation of a rotating dancer. Maybe something like a math quiz / an IQ test / a logical reasoning test