why do optical illusions trick your eyes

As you stare at an optical illusion you may wonderБ are your eyes playing tricks on you? To fully understand how optical illusions work, itБs important to grasp that the visual system is made up of more than just our eyes. In fact,
optical illusions donБt necessarily trick our eyesБthey trickб our brains. The Visual System Is Made Of Many Moving Parts While your eyes play an important role in vision, they are only one component of a larger visual system that includes many different parts such as the optic nerve, the optic chiasm and the visual cortex of the brain, to name a few. We see when light enters our eyes and is focused onto the retina. The cells in the retina turn light into electrical signals that are then sent through the optic nerve to the brain. This visual information is interpreted by our brains allowing us to form an image in our minds. So, technically, we БseeБ with our brains. This complex process takes only one-tenth of a second! Optical Illusions Take Advantage Of The BrainБs Shortcuts As you can imagine, our eyes take in a lot of visual stimuli throughout the day.


To make sure our brains arenБt overloaded with visual information, they often take shortcuts, filling in gaps or creating an image based on past experience. For the most part, these shortcuts work well for us and we never notice them. The exception is when weБre looking at an optical illusion. Optical illusions take advantage of these shortcuts and fool our brains so that our perception of an image doesnБt necessarily match reality. Optical illusions may trick us, but they actually reveal a lot about how our visual system works. Watch this video to understand more about optical illusions! DonБt Let Your Eyes Fool You ItБs easy to be fooled by optical illusions, but as your eye care providers, we make sure youБll never be fooled by your eyes! By coming in for regular eye exams, you can be sure that your vision is healthy and strong as well as be on the lookout for early signs of disease.


If thereБs anything youБve learned from optical illusions today, itБs that things arenБt always as they appear. The same goes for your vision health. Call us to schedule an appointment today so we can make sure your eyes are in peak condition! We love our patients. Thank you for the trust you place in our practice! The content on this blog is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of qualified health providers with questions you may have regarding medical conditions. Previous Post Think of it this way: Optical illusions represent the lighter side of brain malfunction. They're more fun than grand mal seizures, anyway. But how do they work, exactly? settles his penetrating gaze on the topic in today's DNews special report. It's helpful to start with visual perception itself, and this gets a little metaphysical, so hang in there: What we perceive as real is not really real, and we don't actually see what we think we see.


Instead, our optical nerves are processing reflected light waves that are and reversed around the vertical access, then converted into electrical impulses which are reinterpreted by the visual cortex. But the biological upshot is that this whole visual apprehension process takes about one-tenth of a second. That's actually problematically slow, in terms of survival of the species. And so, over millions of years of evolution, the brain has developed ways to compensate for that tenth-of-a-second gap -- by basically hacking your eye-to-brain connection. Many optical illusions work by leveraging aspects of this phenomenon. Current theories essentially break down optical illusions into three types: literal, physiological and cognitive. Literal illusions reply on the concept of in which your brain tries to makes sense of incoming imagery before it actually processes the visual data. Your brain will literally fill in details (or remove them) as it makes an educated guess at what you're looking at.


The phenomenon of -- seeing shapes in the clouds, for example -- is a kind of literal illusion. involve the workings of light-processing neurons in your eyes. Certain patterns can trick the eye by essentially fatiguing specific photoreceptors and producing a kind of focused but temporary blindness. With physiological illusions -- so far as your brain is concerned -- things can actually disappear. Like the San Francisco Giants lead in the, for instance. are the most fun, and these take place entirely within the higher-reasoning portions of your brain. They play upon inconsistencies between what you're seeing and what you're otherwise used to seeing, based on your experiential knowledge of the world. You'll really want to check out Jules' video for this one -- he's got a sequence of optical illusion examples and visual aids to help explain all this. -- Learn More: BBC: Study: Inside Science:

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