Try this optical illusion, it will even fool your reflexes!

This optical illusion even fools our reflexes

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[EN VIDÉO] The Sunray Illusion
Never look the Sun straight in the eye.

The optical illusions are not just funny. Not even just confusing. They are also used by researchers to better understand how our brain makes sense of the world around us. And precisely, a Oslo university team (Norway) today reveals an optical illusion capable of tricking our brains to the point of triggering a reflex. Facing “expanding hole”, the pupils of 86% of us dilate exactly as they would if we walked into a dark area. The illusion that the image gives.

For the researchers, the experiment shows that our brain actually reacts to the way we perceive the light. Even if this light is “imaginary”. As is the case with this optical illusion. Our brain does not react only according to the amount of light that actually enters our eye.

Different perceptions

What the researchers also report, after studying the responses to this optical illusion of 50 women and men, is a difference in reaction between a “expanding hole” black and one “expanding hole” colored. The appearance of colors, in effect, seems to diminish the potency of the perceived optical illusion. But also, modify the reflex response. In our eyespupils which tend to dilate strongly – and all the more when the volunteers strongly express their perception of the illusion – in the presence of a “expanding hole” black and to contract in the presence of a “expanding hole” colored.

At this point, researchers don’t know why some people seem oblivious to this optical illusion. They also don’t know ifother animals might be sensitive to it. But the whole thing shows that the dilation reflex of our pupils cannot be compared to the mechanism of a cell photoelectric operating a gate and which only reacts to the actual amount of light that hits it.

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