Illusion
Illusion
Illusion (/ɪˈluːʒən/; from Latin illusio, from illudere, "to mock") is a distortion of the senses, revealing how the brain normally organizes and interprets sensory stimulation. While illusions distort reality, they are generally shared by most people.
Etymology
The term "illusion" comes from the Latin word illusio, which means "mockery, jesting, irony", from illudere, "to mock at". It entered English via Old French illusion.
Types of Illusions
There are three main types of illusions: Optical Illusions, Auditory Illusions, and Tactile Illusions. Each type of illusion is characterized by distortions or inaccuracies in the perceived sensory input.
Optical Illusions
Optical illusions are visual illusions that occur because the brain processes and interprets visual data in a way that creates a perception that conflicts with reality.
Auditory Illusions
Auditory illusions are false perceptions of sound that are different from the physical reality. These illusions can be the result of the brain's attempt to make sense of complex sounds.
Tactile Illusions
Tactile illusions are illusions that deceive the sense of touch. They can be caused by the brain's interpretation of the input from the skin's receptors.
Related Terms
- Perception: The process of recognizing and interpreting sensory stimuli.
- Sensory Deception: A situation where the perception does not match the physical reality.
- Hallucination: A perception in the absence of external stimulus that has qualities of real perception.
See Also
External links
- Medical encyclopedia article on Illusion
- Wikipedia's article - Illusion
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