More info to follow after you first get a chance to decide - which way is she spinning? Add two numbers in your head - which way is she spinning now? Think of something pleasant, like hugging your child or petting a dog. Which way does she spin for you? Does she change direction? Which way is she spinning most of the time?
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Tell your friends about us!Which way is she spinning?
- Thread starter Marana
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odklizec
PK
Hehe this is one of the funny "brain" things I was never good at. My "default" is anticlockwise spinning and for s short period I saw her spinning clockwise. My wife said that her "default" is clockwise. I guess it has something to do with differences in man's and woman's brain? 
An interesting reading on this subject:
http://www.livescience.com/health/050120_brain_sex.html
An interesting reading on this subject:
http://www.livescience.com/health/050120_brain_sex.html
It has to do whether your right brain or left brain is dominant while you're viewing it. Mine flip flops regularly, my daughter sees it spin only clockwise. The original article can be viewed here:
http://www.heraldsun.com.au/news/right- ... 1114603615
http://www.heraldsun.com.au/news/right- ... 1114603615
waloszek
Member
I came across this around the time of the original article. I had lots of heated discussions with my colleagues and friends, and mostly the direction was in contrast to what people expected (with respect to right-left brain characteristics). I know from the psychology of perception that there are visual phenomena, that is, projections of moving 3D scenes, where the directions changes involuntarily. Thus, I would not subscribe to the hypothesis that this has anything to do with left vs. right brain and the respective faculties...
Best regards, Gerd
Best regards, Gerd
waloszek
Member
@Marana (and others who are interested):
You wrote: Really, what causes it to change - errant eye movements, or...? I find it interesting that it flips for some, stays steady for others.
No, it's the ambiguity of the silhouette. I searched Google, and was finally successful with the search phrase "ambiguous silhouette." You can do the search on your own, but I would like to mention and cite from two sources:
1) http://www.michaelbach.de/ot/sze_silhouette/index.html
All silhouettes are ambiguous. Our brain tries to reconstruct the third dimension (space) from the flat image in our eyes, adding information which is usually realistic, but not really there. And in the case of a silhouette, there are two equally likely interpretations, leading to perceptual rivalry.
...
- The original authors copyright was removed. Naughty! Here the material is reproduced with permission (granted Oct 2007, thanks again!).
- Second, it was accompanied with misguided and erroneous comments about the right and left brain hemispheres, insinuating that a given spin direction was associated with dominance of one of the two hemispheres, topping this with totally exaggerated interpretations of hemispheric specialisation, which is strongly overstated in populist claims anyway.
2) http://psychology.about.com/od/sensatio ... lusion.htm
After it was initially created by Nobuyuki Kayahara, the illusion was mistakenly referred to as a scientific personality test of right brain/left brain dominance by numerous websites and blogs. In reality, the spinning dancer illusion is related to bistable perception in which an ambiguous 2-dimensional figure can be seen in from two different perspectives. Because there is no third dimension, our brains try to construct space around the figure. Similar illusions include the Necker Cube and the Reversible Face/Vase Illusion.
>>> Thus, as I had suspected, there is a correspondence to the Neckar cube illusion and other ambiguous figures. I remember that some colleagues used the projection of a cylindric cage that span at constant speed in their experiments. The projection of the movement is also ambiguous and seems to reverse. As far as I remember, they used the number of reversals as an indicator for the state of vigilance of their test persons (drugs and drinking coffee also seem to have an impact...).
Best regards, Gerd
You wrote: Really, what causes it to change - errant eye movements, or...? I find it interesting that it flips for some, stays steady for others.
No, it's the ambiguity of the silhouette. I searched Google, and was finally successful with the search phrase "ambiguous silhouette." You can do the search on your own, but I would like to mention and cite from two sources:
1) http://www.michaelbach.de/ot/sze_silhouette/index.html
All silhouettes are ambiguous. Our brain tries to reconstruct the third dimension (space) from the flat image in our eyes, adding information which is usually realistic, but not really there. And in the case of a silhouette, there are two equally likely interpretations, leading to perceptual rivalry.
...
- The original authors copyright was removed. Naughty! Here the material is reproduced with permission (granted Oct 2007, thanks again!).
- Second, it was accompanied with misguided and erroneous comments about the right and left brain hemispheres, insinuating that a given spin direction was associated with dominance of one of the two hemispheres, topping this with totally exaggerated interpretations of hemispheric specialisation, which is strongly overstated in populist claims anyway.
2) http://psychology.about.com/od/sensatio ... lusion.htm
After it was initially created by Nobuyuki Kayahara, the illusion was mistakenly referred to as a scientific personality test of right brain/left brain dominance by numerous websites and blogs. In reality, the spinning dancer illusion is related to bistable perception in which an ambiguous 2-dimensional figure can be seen in from two different perspectives. Because there is no third dimension, our brains try to construct space around the figure. Similar illusions include the Necker Cube and the Reversible Face/Vase Illusion.
>>> Thus, as I had suspected, there is a correspondence to the Neckar cube illusion and other ambiguous figures. I remember that some colleagues used the projection of a cylindric cage that span at constant speed in their experiments. The projection of the movement is also ambiguous and seems to reverse. As far as I remember, they used the number of reversals as an indicator for the state of vigilance of their test persons (drugs and drinking coffee also seem to have an impact...).
Best regards, Gerd