Scientists did not invent the vast majority of visual illusions.

绝大多数视觉幻象并不是科学家创造出来的。

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So scientists presented various visual illusions to subjects, like one where two equal circles are often perceived as being different sizes.

因此科学家们向实验对象展现了多种的视觉错觉，比如，两个经常被认为大小不同的事实上相等的圆。

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Rather, they are the work of visual artists, who have used their insights into the workings of the visual system to create visual illusions in their pieces of art.

确切地说，它们是视觉艺术家们的作品。在这些作品中，艺术家们深刻地领悟了视觉系统的活动，从而创造出视觉幻象。

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Artists, he says, rely on our proneness to visual illusions arising out of the fact that all perception involves unconscious inference, as when a two-dimensional retinal image is translated into a three-dimensional perception.

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The company is renowned for its spectacular, 360-degree performances that take place above, aside and among the audience with acrobatic dance numbers, visual illusions, elaborate lighting and a live DJ mixing electronic, pop, percussion and tribal beats.

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People are generally unfamiliar with the visual language thus perhaps this is why so-called optical illusions exist?

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