Sick Optical Illusion

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Ashman

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2009
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Focus on the plus in the middle. the purple dots should dissapear.
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Lilac chaser is a visual illusion, also known as the Pac-Man illusion. It consists of 12 lilac (or pink or magenta-like), blurred disks arranged in a circle (like the numbers on a clock), around a small, black, central cross on a grey background. One of the disks disappears briefly (for about 0.1 second), then the next (about 0.125 second later), and the next, and so on, in a clockwise direction. When one stares at the cross for about 20 seconds or so, one first sees a gap running around the circle of lilac disks, then a green disk running around the circle of lilac disks, then a green disk running around on the grey background, the lilac disks appearing to have disappeared or to have been erased by the green disk.

Amazing Eh?
 
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First the blinking dot becomes green and then it 'erases' the purple dots. If you blink the dots will reappear, but the green dot will erase em again.

Amazing lol

@Hawk - just focus. You must not move your eyes or your head/body :) Oh and move a bit closer to the screen, might help :P
 
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