Abby Hughes
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The term illusion refers to a specific form of sensory distortion. Unlike a hallucination, which is a distortion in the absence of a stimulus, an illusion describes a misinterpretation of a true sensation.
noun. uk / ɪˈluː.ʒ ə n / us / ɪˈluː.ʒ ə n / Add to word list. C2 [ C or U ] an idea or belief that is not true: have no illusion about He had no illusions about his talents as a singer. under no illusion I'm under no illusions (= I understand the truth) about the man I married.
- The Hermann Grid Optical Illusion. Sometimes we see things that aren't there, and the Hermann Grid illusion is a great example. Notice how the dots at the center of each intersection seem to shift between white and gray?
- The Spinning Dancer Optical Illusion. The popular illusion made the rounds on blogs and websites a few years ago, supposedly as a test to determine if you are "left-brained or right-brained."
- The Ames Room Optical Illusion. Would you be surprised to learn that the two people in the image at the left are actually the same size? Known as the Ames room illusion, this visual trick has been utilized in films such as The Lord of the Rings.
- The Ponzo Optical Illusion. Wikimedia Commons. When you look off into the distance, objects seem closer together as they become further away. For example, the outside borders of a road or railroad appear to converge as they recede into the distance.
Learn what an illusion is and how it differs from a hallucination. Explore the types and causes of illusory experiences in vision, hearing, and other senses.
- Louis Jolyon West
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Aug 31, 2021 · Learn how illusions expose the rules and biases our brain uses to create reality from sensory input. Explore examples of illusions such as the jellybean and the cup, rotating snakes, Ames room and 3D Schröder staircase.
- Genelle Weule
Learn how psychologists use illusions to study perception, and how illusions are based on insights about our perceptual system. Explore examples of depth, light, size, and contrast illusions, and how they affect our experience of the world.
Learn the meaning of illusion, a word that can refer to a misleading image, a false perception, or a deceptive state. See synonyms, examples, word history, and related phrases of illusion.
