Scientists found a trippy illusion that triggers pupil dilation (in most people)
Approximately 86% of the people who see the above hero image will experience involuntary pupil dilation. No, that’s not a GIF and the image isn’t manipulating your monitor’s refresh rate. If you’re among those who perceive the illusion, your brain is actually being tricked into believing you’re entering a darkened space. Dubbed ‘the expanding hole’ …
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