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Thread: Left Brain v. Right Brain Optical Illusion

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  1. #1

    Default Left Brain v. Right Brain Optical Illusion

    http://www.switched.com/2007/10/15/t...ns-on-the-net/

    Vak posted this over on the other board, I figured I'd bring it over here. I see counterclockwise, and only counterclockwise.
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  2. #2
    Ancient Arachnid Spider's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    Just clockwise - can't see counterclockwise. The other ones are cool, too.

    Edit: I went back and concentrated and made her go counterclockwise, but when I looked away and looked back, there she was spinning clockwise again.
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    Mayor of Bringsburg homerdindon's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    I don't see how in the world that can be seen as clockwise, but obviously I'm in the minority somehow.

  4. #4

    Default Re: Left Brain v. Right Brain Optical Illusion

    Quote Originally Posted by homerdindon View Post
    I don't see how in the world that can be seen as clockwise, but obviously I'm in the minority somehow.

    Yes, yes you are.
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    Ancient Arachnid Spider's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    Quote Originally Posted by homerdindon View Post
    I don't see how in the world that can be seen as clockwise, but obviously I'm in the minority somehow.

    Focus on her extended leg. Imagine that as it goes from your right to your left, it is coming out towards you - she's spinning clockwise. Then, imagine that as her extended leg goes from left to right, it is pointing toward from you. Now she's going counterclockwise.

    If you imagine that her extended leg is always pointing toward you, she actually seems to go back and forth instead of in a circle.
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  6. #6

    Default Re: Left Brain v. Right Brain Optical Illusion

    What does it mean if you see both??? Depending on what I focused on, I was able to see it one way or the other.

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    Olympic Champ ISU2008's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    I see clockwise. I have seen stuff like this before and I can usually see it both ways but I'm having trouble on this one. Maybe I'm too close to the screen.

    OK try squinting at it. I did that and got her to change direction every time I squinted. It was kind of weird.
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    Olympic Champ RYou's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    It's not an illusion. The dancer is reversing rotation. If you watch the shadow of the feet it suddenly reverses direction. if going counterclockwise, she leads with her left leg raised. Then after 30 secs or so, she'll reverse direction and lead with her right leg raised spinning clockwise.

    The direction you first see is whatever happens to be the direction when you first open the link

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    Ancient Arachnid Spider's Avatar
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    Default Re: Left Brain v. Right Brain Optical Illusion

    Quote Originally Posted by RYou View Post
    It's not an illusion. The dancer is reversing rotation. If you watch the shadow of the feet it suddenly reverses direction. if going counterclockwise, she leads with her left leg raised. Then after 30 secs or so, she'll reverse direction and lead with her right leg raised spinning clockwise.

    The direction you first see is whatever happens to be the direction when you first open the link
    I think you're both wrong. The motion of the figure doesn't change, but your perception of the rotation does. The shorter shadow always starts on the right and ends on the left. What changes is your interpretation of which leg's shadow is closer to you.
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