What colour do YOU see? This Coke can isn’t actually red – how mind-boggling optical illusion tricks your BRAIN
- Dr Dean Jackson has left many in disbelief after sharing an illusion on TikTok
- Optical illusions occur when our brain is confused about what our eyes see
There’s no doubt that optical illusions baffle the best of us – whether it be disappearing dots or the true colour of a Coke can.
Scientists have referred to them as ‘some of nature’s most impressive magic tricks’ with the ability to simply deceive our brains into believing something false.
And now, a TikTok shared by Dr Dean Jackson (@beatonthebeeb) will do just that – sparking doubt as to whether we can trust our own eyes.
Many watchers have been left in disbelief as the biologist talks through a mind-boggling trick, involving a Coke can.
While the can appears to be bright red, Dr Jackson explains that your eyes are deceiving you, as it’s actually grey.
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Many watchers have been left in disbelief as the biologist talks through the baffling videos
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He said: ‘Surrounding grey with this sort of colour (pointing to blue) makes your brain susceptible to interpreting it as red.
‘And knowing the colour of the Coke can can exaggerate this further.’
This strange phenomenon occurs when our brains are confused by what our eyes see.
Two types of photoreceptor are located at the back of a human eye, allowing us to respond to light shining in.
While ‘rods’ are sensitive to motion, ‘cones’ are sensitive to light, with each responding to a different colour.
In Dr Jackson’s video, the cyan filter only lets through cyan-coloured light, meaning anything else should appear grey.
But when our brain recognises that Coke cans are usually red, it can interpret the grey light to appear this way.
Psychology Professor Alan Johnston at the University College of London also explained: ‘Optical illusions are some of nature’s most impressive magic tricks. They are deceptively simple and yet compelling – your brain is telling you lies.’
The video has since been flooded with comments, with TikTok users voicing their confusion and disbelief.
‘There is red lol my eyes don’t lie,’ one person said, as another added: ‘There’s definitely red there.’
Second-guessing the true colour of something is a common illusion, as shown by debate surrounding the viral ‘white and gold’ dress that was actually blue and black.
The video has since been flooded with comments, with TikTok users voicing their confusion
Millions debated whether this dress was black and blue or actually white and gold
Much like the Coke can, this strange phenomenon occurred when colours were muddled together, throwing the brain off balance.
Dr Jackson presented another example of this in video where he showed an image of a woman’s eyes that appear blue, but are actually grey.
Turns out, this can also vary depending on your sex, according to Professor Andrew Lotery of the University of Southampton.
This is influenced by an individual’s gene combinations that create a sense of colour, he told MailOnline.
Because these genes are on the X chromosome, women tend to have more variations and flip between colour perceptions more than men.
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