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An optical illusion has gone viral because of the way it uses a clever brain trick to dilate your pupils, but it doesn't work on everyone - are you immune to it?
And they respond the same way we do.
Scientist creates tricky optical square illusion that tricks your brain into thinking it's moving by designing the shapes with luminance-based edges that activate motion-detecting neurons.
Try it out yourself, then dig into the science of why it did (or didn’t!) trick your brain.
A tiny voice lives deep inside my mind, and I’ve ignored it so many times – much to my regret.