착시 현상의 배경에는? The science behind optical illusions: Video reveals how easy it is to fool our brains using simple tricks(VIDEO)

산업과학 Construction,Science/IT 과학 IT & Science|2015. 8. 7. 13:21



http://www.dailymail.co.uk/sciencetech/article-3187403/The-science-optical-illusions-Video-reveals-easy-fool-brains-seeing-isn-t-there.html

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Our eyes have a type of cell that has a way of 'leaking' this light information to neighboring cells. The video describes how this creates a visible halo when you're looking at certain high contrast images. The effect can be seen in this famous illusion, the Hermann grid

These are two identical, straight lines. But what happens when you change what’s going on around them? All of a sudden, the lines look like they’ve changed size in relation to each other; they could shrink and grow (left) and they could bend, buckle (right). 'Even though it would seem like the lines themselves are changing,' the video says, 'the only thing that’s actually bending or buckling is your mind


These are two identical, straight lines. But what happens when you change what’s going on around them? All of a sudden, the lines look like they’ve changed size in relation to each other; they could shrink and grow (left) and they could bend, buckle (right). 'Even though it would seem like the lines themselves are changing,' the video says, 'the only thing that’s actually bending or buckling is your mind



If you put a bike-spokes pattern behind two, straight horizontal lines, the lines will look warped, even though they are straight. When your brain sees the pattern, it focuses on the point in the middle, as if you're moving towards it. Your brain then thinks the two parallel lines are approaching you




Although the coils in the image appear to be rotating, in reality they're completely stationary. The effect works best in peripheral vision, so when you stare at one of the coils it will appear stationary while those around it will appear to rotate. Vision experts aren't exactly certain why it works; however, their research has revealed that the shading of the segments that make up the rings is crucial



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