Optical Illusion: Recognize the sad face emoji within four seconds!

The Latin verb illudere, meaning to deceive or mock, is the root of the English word illusion.

One of the simplest ways to gauge brain activity is with optical illusion pictures, which are intentionally misleading.

Researchers in the field of neuroscience have also studied the brain's reality perception using images of optical illusions.

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It has been proposed that individuals can enhance their problem-solving abilities and lateral thinking by practicing optical illusion puzzles.

A grid of clown emojis laughing is shown in the image that was shared above.

Finding that sad emoji in only four seconds is the reader's challenge.

One of the emojis, though, is depressed. Observation is the key to success in this challenge.

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