"Illusion" refers to a deceptive perception or misleading impression that distorts reality, often tricking the senses or mind. It can manifest visually, as in optical illusions where images appear differently than they are, or cognitively, where beliefs or expectations create false interpretations. Illusions exploit the brain's tendency to fill gaps, relying on context, prior knowledge, or sensory shortcuts. Common examples include mirages, magic tricks, or pareidolia (seeing faces in objects). While illusions highlight the brain's interpretive power, they also reveal its vulnerabilities, demonstrating how perception is subjective and constructed. Artists, psychologists, and neuroscientists study illusions to understand perception, attention, and the limits of human cognition.
