Friday, November 4, 2011

You are blind for 40 minutes EVERYDAY.


It's not that your eyes aren't working. Your mind is actually blocking images all the time, and refusing to process them. Whenever your eyes move, your brain doesn't process what would normally be very dizzying blurry images coming from the retina. To fill in the gaps of time, your brain creates an illusion for a fraction of a second to keep us from noticing. This is called "Saccadic masking" and it keeps us from experiencing motion blur. Your brain replaces the blurry images with static images of your next object of focus. Whatever you look at after moving your eyes appears to stay still for a long period of time, because it is actually the same image stretched for a longer period of time to cover up the blur. This is called the "stopped-clock illusion", when the first second on a clock after you turn to look at it appears to take longer than all the other seconds.

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