Once you've seen both the face and the vase, you can make yourself see either one.īut that doesn't seem to be happening with this dress, hence the vehement debate. What strikes Brainard as particularly odd about all of this is that while after seeing most optical illusions, people are typically able to force themselves to switch back and forth between one interpretation and another. But it's true: "Same color illusion proof2" by Edward Adelson color illusion is the Wikipedia article about this image. Just like the dress, it can feel impossible to believe. It figures that B is in the shadow and therefore, in order to explain how both squares could be sending the same amount of light to your eye, it determines that it must be white. Your eyes "know" this, but your brain tells you a different story. Well, they're actually both the exact same shade of gray. Adelson, this file by Gustavb - File created by Adrian Pingstone, based on the original created by Edward H. Right? "Grey square optical illusion" by Original by Edward H. The squares marked A and B appear to be different colors - A looks gray while B looks white. The way your brain uses light conditions to interpret what you're seeing is evidenced in the checker shadow optical illusion created by MIT professor Edward H. But much real-world information is lost in photographs, and this can sometimes cause illusions." "Is the blue light reaching your eye a white dress under a blue light or a blue dress under a white light? Your brain has lots of tricks for 'unmixing,' so such illusions rarely occur in real life. This is because the color of the light entering your eye from an object mixes up the color of the illumination and the color of the object," she wrote in a blog post Friday. "It is very easy (especially in photographs) to change the perceived color of an object by changing the illumination. (She was also excited about all the hubbub: "I find it interesting that my usually-considered-boring research area is getting some attention," she told CBS News.) Sarah Allred, Ph.D., an assistant professor of psychology at Rutgers University, also saw problems presented by the picture itself. The brain is trying to do this process in an image that doesn't work quite the same as it does in natural viewing." Both of those areas are providing information. "If you look at the photo, the lower right is very yellow and the upper right is very blue. "Those pictures completely defeat the brain's natural mechanism for discounting illumination," Brainard explained. But the reason we don't see the color of a flower differently in sunlight versus shade versus under an incandescent or fluorescent lamp is that our brain takes account of the illumination changes and adjusts our perception accordingly.īut in the case of the mysterious dress, this doesn't seem to be working quite right. This changes the color of light reflecting off an object and into your eye. To unravel this part you need to look at a few things: the original photograph, the nature of light and our wacky, wonderful brains.ĭifferent light sources throw off light of different colors.
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