HARROW: IT was a brain teaser that took the internet by storm and led people to doubt the colours in front of their eyes.FOR some, the stripes of #TheDress were blue and black, for others gold and white.
Yet the original photo, posted on the Tumblr social media site in March, was made up of pixels that were either brown or blue.
Now scientists have investigated what has been called the most dramatic example of differences in colour perception ever documented and concluded that it is all to do with the way our brains filter light.
One study of more than 1400 individuals, including 300 who were newcomers to #TheDress, found that people fell into one of three camps – blue/black, white/gold, and a smaller blue/brown contingent.
What colour stripes participants see may correspond to whether their brains expect to experience artificial “indoor” or natural “outdoor” light, according to US neuroscientist Dr Bevil Conway, from the Massachusetts Institute of Technology.
People who perceive white and gold stripes may be more attuned to daylight while those who see a black and blue dress are more accustomed to indoor lighting, he said.The brains of “brown and blue” individuals were likely to fall in a bracket somewhere between.
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