Optical Illusions: When Your Eyes and Brain Don't Match

Observational illusions are curious visuals that demonstrate that perception is not always blind.

When you look at an optical illusion, such as a moving object that appears to be stationary or a curved line that is actually straight, you might believe that you are seeing things. 

You question whether you're seeing things incorrectly.

Not your eyes, that is. An illusion is evidence that your perception of what you see is not always accurate due to the way your brain and visual system as a whole process and interpret images.

The way the visual areas of the brain receive and process information can lead to the creation of visual illusions.

 Put another way, your perception of an illusion is less a result of your eyes' optics and more a function of your brain.

According to Michael Bach, a vision scientist and professor of neurobiophysics at the University of Freiburg Eye Hospital in Freiburg, Germany

According to Michael Bach, a vision scientist and professor of neurobiophysics at the University of Freiburg Eye Hospital in Freiburg, Germany

The brain must interpret everything that comes into contact with the senses, and sometimes this interpretation is incorrect.

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