If you've ever wondered whether your brain can comprehend visual information quickly, this simple quiz is for you. The rule is simple: when the screen goes black, tap/click the left mouse button on the screen as quickly as you can!
The average reaction time to a visual stimulus is about 250ms (milliseconds), and most people can improve to 200ms with enough practice. The fastest reported reaction time to a visual stimulus is 120 milliseconds, a difficult record to break. If you believe you have what it takes to perform better, please upload a video of yourself performing this test to YouTube and send us the link. This test can be retaken as many times as you want with no effect on your final score.
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