Discover a bird in just four seconds with this optical illusion eye test! 

Give it four seconds. Can you find it? See how good of an observer you are! 

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

To supplement what our eyes can detect, our brains often fill in the blanks to give us a full sensory picture of our environment. 

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

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Visual illusions have also been utilized by neuroscientists to investigate the brain's reality perception processes. 

Some research suggests that completing optical illusion puzzles on a regular basis can help people become more creative thinkers and problem solvers. 

The task for the audience is to identify the bird within four seconds. 

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