Additionally, perceiving an unmoving or static image as moving and changing also falls into the category of physiological optical illusions. Many of you may have experience with staring at an unmoving stimulus for so long that when you look away or close your eyes, you can still see the afterimage even with your eyes closed. Physiological optical illusions are often thought of as afterimages. Physiological images are much different than literal optical illusions. Here are some examples of literal optical illusions! PHYSIOLOGICAL The shapes of the faces also create the shape of the goblet in the center. Upon further inspection, many people start to see a white goblet instead of the two people facing one another. Both are just shadows with no detailed characteristics on a white background. For example, the most common literal optical illusion is the image of two faces facing one another. Literal optical illusions can be described as an image within another image. Worried about your eye health? Schedule your appointment here at Poudre Valley Eyecare in Fort Collins today. In today’s blog here at Poudre Valley Eyecare in Fort Collins, we briefly explore the three main types of optical illusions and their characteristics. There are three main categories that most optical illusions fall in - literal, physiological, and cognitive. They are a perfectly natural phenomenon and don’t necessarily reflect your eye health or brain health. Optical illusions can be thought of as a way your brain tries to make sense of what you see by changing how you perceive the stimulus. Optical illusions are a fun and creative way to demonstrate that you can’t always trust your senses.
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