Strawberry optical illusion reveals if your brain lies

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This fruity optical illusion tells viewers if their eyes are in denial.

Japanese psychologist Akiyoshi Kitaoka went viral on Twitter in 2018 after posting a photo featuring a medley of strawberries laying on top of a custard tart — but four years later viewers still can’t decide what color they are.

Kitaoka explained that the snap has a blue light filter applied to it, and the illusion it creates can determine if your brain lies to you or not.

The color of the strawberries that most onlookers can see in the picture of the fruit tart — red — is not their true hue in reality.

However, Kitaoka claimed there are no red pixels in the photo.

In a follow-up tweet, the clinician shared a similar photo of a strawberry cake with a blueish-gray sheen added to it. Kitaoka noted that this shot seems to be reddish, despite the fact that all the pixels present in the image are either cyan or gray.

Users revealed in the Twitter thread what they believed they were seeing in the two photos, as some argued over the genuine color of the strawberries.

This optical illusion reportedly has no red pixels in it whatsoever.
optical illusion
This image shows a berry cake with a blue-gray filter applied to it.

“There are definitely red pixels,” said one person. “No, it’s a warm grey,” said another. 

So why do our brains refuse to believe the strawberries aren’t red?

As one 2013 study explained, our minds capture common images and store those visualizations in our memory. We then equate certain colors as exclusive to specific fruits and that can fool our minds. This is referred to as memory color.

This occurrence is also known as “cortical coloring-in,” and transpires through the brain’s visual cortex (found in the occipital lobe).

Due to the fact that most people are used to seeing strawberries as bright red, their brains will naturally perceive red even in the apparently grey berries.

Although optical illusions are often geared to be little more than viral diversions — they also can hold real value for scientists. The brain teasers reportedly help researchers uncover the inner workings of the human mind — and how it reacts to its surroundings.

Dr. Gustav Kuhn, a psychologist at Goldsmiths University in London, told The Sun 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.”

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