Optical illusions recently sent the Internet to Tizzy because they make our brain play sports, and can become the perfect test of our observation skills and acute eye. They are also very fun to decide and can be the perfect recipe for a sad evening! Optical illusion is actually a visual phenomenon where the brain incorrectly interprets what the eyes perceive. This happens when the information sent to the eyes is contrary to how the brain processes and understands what sees. These illusions often deceive us to see things that are gone, or perceive the objects differently from reality. For example, it may seem that a fixed image may move, or two shapes may seem uneven, although they are identical.Can you notice the “different” dinosaur in this picture?In this picture, we see how similar dinosaurs stand. All of them seem to be the same to the nude eye with the same color and size. However, there is one sneaky dinosaur that is different from the rest. Can you notice it? But remember you just have 10 seconds to do it! Can you do it? Your time starts now!RevealGive up? Take a closer look at the second last row, and you will be able to notice the dinosaur. You did? Let us know in the comments section.Types of optical illusionsThere are three main types of optical illusions:Literal illusions: they arise when the brain combines the image elements to create something that does not exist. For example, the image may look like two faces or vase depending on how you interpret it.Physiological illusions: they are caused by exceeding the visual system, such as excessive effects of light, movement or color. They can create effects such as afterimages or movement illusions.Cognitive illusions: They rely on how the brain subconsciously interprets information. Examples include illusions such as Mueller’s illusion where the lines are longer or shorter because of the surrounding forms.
