Vision: Crash Course A&P #18
Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and...
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Take a good long look at this -- we’re gonna mess with your brain. This is the first stage of an optical illusion. Many illusions use patterns of light or perspective to exploit the disconnect that exists between sensation and perception -- between what your eyes see and what your brain understands. But not all illusions work that way. Some produce ghost effects, or afterimages, that take advantage of glitches in the physiology of human vision. Like this flag. I’m not trying to make a political statement here. And I’m not going ask you to swear allegiance to the Republic of Hank or anything. I mean, if I was gonna start my own country, my flag would be way cooler than that -- not that I’ve thought about that a lot. And now, look at this white scree...
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Take a good long look at this -- we’re gonna mess with your brain. This is the first stage of an optical illusion. Many illusions use patterns of light or perspective to exploit the disconnect that exists between sensation and perception -- between what your eyes see and what your brain understands. But not all illusions work that way. Some produce ghost effects, or afterimages, that take advantage of glitches in the physiology of human vision. Like this flag. I’m not trying to make a political statement here. And I’m not going ask you to swear allegiance to the Republic of Hank or anything. I mean, if I was gonna start my own country, my flag would be way cooler than that -- not that I’ve thought about that a lot. And now, look at this white scree...
