THIS fiendishly tricky optical illusion asks viewers to identify the hidden likeness between the two pears.
While the pieces of fruit appear to be a different colour, in truth they’re far more alike than you think.
Despite one pear looking darker than the other underneath the black and white lines, they’re both actually the same hue.
This mechanism is an example of a brightness illusion.
Similar visual puzzles have been around for over 100 years and follow a familiar pattern.
Typically, two identical objects are placed on a striped or graded background.
The objects appear very different based on where they are placed against the background.
In June 2020, researchers at the Massachusetts Institute of Technology investigated the mechanism behind the illusions.
They showed that the phenomenon relies on a quirk in the way that our brains process what we see.
When we look at an image, we estimate the brightness of an object before visual information reaches the brain’s visual cortex.
Most read in Tech
It means that objects of the same colour can appear brighter or darker than they are based on the background they’re presented on.
“All of our experiments point to the conclusion that this is a low-level phenomenon,” MIT’s Professor Pawan Sinha said at the time.
“The results help answer the question of what is the mechanism that underlies this very fundamental process of brightness estimation, which is a building block of many other kinds of visual analyses.”
Optical illusions are often just a bit of fun, but they also hold real value for scientists.
The brain puzzles help researchers shed light on the inner workings of the mind and how it reacts to its surroundings.
Dr Gustav Kuhn, a psychologist and human perception expert at Goldsmiths University in London, told the Sun in June that illusions are important to our understanding of the brain.
“We typically take perception for granted, and rarely think about the hard work that underpins everyday tasks, such as seeing a cup of coffee in front of you,” he said.
“Visual illusions highlight errors in perception, and they provide important glimpses into the hidden neural processes that allow us to see the world around us.”
It follows the release of a spooky illusion earlier this year that makes the viewer feel as though they are tumbling into a black hole.
Best Phone and Gadget tips and hacks
Looking for tips and hacks for your phone? Want to find those secret features within social media apps? We have you covered…
- How to delete your Instagram account
- What does pending mean on Snapchat?
- How to check if you’ve been blocked on WhatsApp
- How to drop a pin on Google Maps
- How can I change my Facebook password?
- How to go live on TikTok
- How to clear the cache on an iPhone
- What is NFT art?
- What is OnlyFans?
- What does Meta mean?
We pay for your stories! Do you have a story for The Sun Online Tech & Science team? Email us at firstname.lastname@example.org