![]() ![]() Here the situation for visual interpretation on the checkerboard is complex: There is light coming onto the surface, then there’s the shadow cast by the cylinder, and both light and dark squares under the shadow. If you don’t believe in me, click on this link to see the proof.Īdelson’s checker shadow illusion is a classic example of how our visual system does not perceive in absolute terms. In this famous visual illusion, the square marked with an A looks a lot darker than B, right? But in reality, they are the same shade of grey. RELATED: Are You Being Manipulated by Subliminal Messages? īest Optical Illusions 1 Troxler's Effect Now, without further ado, let’s take a look at some of the best optical illusions we've found on the web and what they reveal about the blind spots in our visual perception. These science experiments are powerful reminders that we “see” the physical world according to how our brain organizes its elements, such as shapes, sizes, colors, spatial relationships. Bumble bees that survive on blue flowers will go to the grey flower if we construct their environment in a way that grey is the bluest color in an array of yellow flowers. Beau Lotto’s experiments with bumbles bees, he proves that the bumble bee brain-similar to the human brain-doesn't encode color information in absolute terms but rather learns through the real world. Bumble bees famously see colors although their basic palette consists of green, blue and ultraviolet, instead of red, green and blue. Humans aren’t the only ones who sees optical illusions either. For example, we associate a grainy texture with a wooden surface and tend to apply this knowledge even when we see a smooth plastic surface with a wooden pattern design. Our brains have evolved to store a “rulebook” of how objects should look/feel/smell from past sensory experiences. Īlthough finding a common theory to explain all types of illusions would be “ a theorist’s dream," the prevailing academic explanation sees cognitive illusion as a result of “ misapplied knowledge employed by the brain to interpret or read sensory signals. In other words, our brains will “act out” and arrive at seemingly “inappropriate” interpretations. So when a visual situation deviates from what our brain knows as the “norm,” optical illusions are a result of our brains' responses to abnormal visual experiences. The brain has evolved to see the world it is useful to see."Īnd how does the brain adapt to seeing in a useful way? Without delving too deep into vision science theories, such as Baysian models, a simple truth that defines how we see is the fact that our brain constantly defines and re-calibrates the “norm” in every visual situation. Beau Lotto, “The brain didn't actually evolve to see the world the way it is. In the words of the renowned neuroscientist Dr. Our brains have evolved to identify patterns, creating associations by interacting with the real world. It’s what we do with the information that gives it meaning. If we challenge ourselves to think further, you’ll come to understand that information-such as visual input-has no meaning at all. The best optical illusions challenge our perception of reality: What seems true at the moment turns out to be false. And as you should have guessed by now, the two circles are of the same size. ![]() ![]() You aren’t alone if you think the circle on the right looks larger. ![]()
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