Friday, May 12, 2017

5. Optical Illusions and the Brain

Thesis: I learned that optical illusions aren't the trick of our eye or brain but our visual perception and its limitations. What we see is based on our normal perception, so under the weird circumstance we see the odd sensation. 
Evidence: Optical illusions uses color, light, and patterns to create the images that deceive our brain. The information that the eye catches is processed by the brain that creates a perception that doesn't match the real image. It's really just a shortcut for our brain- these illusions mislead our brain to take these shortcuts because what we see is actually light bouncing off of it and entering into our eye. It converts into electrical impulses which your brain turns into an image in a tenth of second. But your eye takes in streams of lights, so it's difficult for your brain to process it all at once. 
So-What: Not every optical illusion we see moves, some make us see colors or shades that aren't even there. But what makes the image move is due to psychedelic peripheral drift vision- how we perceive light and dark. Our brain is able to see the light colors faster than dark making it seem like the image is moving. You can reset the perception of motion by blinking, shifting your eyes, and looking away and back refuels the illusion of motion.

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