The eyes collect small samples of information through movement, and the brain then fills in the rest to create the image that makes up how humans perceive the world.

"It's a constant update between what I see, remember and expect. It's the dance between these three that gives us the feeling of reality," says neurobiologist Naryanan Kasthuri.

"A huge amount of information"

Although the eye only perceives details in about one percent of the visual field, Kasthuri believes that thanks to this, humans can perform complex tasks, such as driving a car.

"One percent is actually a huge amount of information to take in. If we had to pay attention to absolutely everything on the road at a given moment, it would take minutes, maybe longer, before we decided to turn," says Naryanan Kasthuri.

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