illusion

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Related to Illusions: Optical illusions

illusion

(Deception), noun aberration, distortion, fallacy, false impression, misbelief, misconception

illusion

(Impression), noun apparition, artifice, chimera, daydream, deception, delusion, dream, figment, masquerade, mirage, myth, optical illusion, phantasm, phantasmagoria, phantom, semblance, specter, spirit, vision, wraith
See also: artifice, deception, distortion, fallacy, figment, phantom, prestidigitation, semblance, specter, vision

ILLUSION. A species of mania in which the sensibility of the nervous system is altered, excited, weakened or perverted. The patient is deceived by the false appearance of things, and his reason is not sufficiently active and powerful to correct the error, and this last particular is what distinguishes the sane from the insane. Illusions are not unfrequent in a state of health, but reason corrects the errors and dissipates them. A square tower seen from a distance may appear round, but on approaching it, the error is corrected. A distant mountain may be taken for a cloud, but as we approach, we discover the truth. To a person in the cabin of a vessel under sail, the shore appears to move; but reflection and a closer examination soon destroy this illusion. An insane individual is mistaken on the qualities, connexions, and causes of the impressions he actually receives, and he forms wrong judgments as to his internal and external sensations; and his reason does not correct the error. 1 Beck's Med. Jur. 538; Esquirol, Maladies Mentales, prem. partie, III., tome 1, p. 202. Dict. des Sciences Medicales, Hallucination, tome 20, p. 64. See Hallucination.

References in classic literature ?
And next day Martin Eden cast hack-work aside, and at white heat hammered out an essay to which he gave the title, "The Philosophy of Illusion.
If this golden rim were quenched, if life were no longer circled by an illusion (but was it an illusion after all?
by Times News Service The Museum of Illusions was formally inaugurated at the Muscat Grand Mall on Monday.
The museum, brought to Oman by Global Development and Investment, is the first of its kind in the region and includes the largest single collection of optical illusions in the Middle East.
The book focuses on cognitive illusions that have been extensively researched, such as illusions of control and hindsight bias, and seeks to identify the normative cognitive processes responsible for these illusions.
presents Intimate Illusions performing 7 shows set in the hip W Boston Hotel ballroom offering a truly memorable experience during your Boston night on the town.
Mike added: "Animated illusions are a useful way of doing this as they often involve visual principles that can be taken on board and used by designers to enhance their work.
has entered the fragrance category with Lasting Illusions, a line of fragrance mists for men and women that combine value and luxury.
Kitaoka is a Japanese psychology professor who specializes in visual illusions of geometric shapes and motion illusions.
With winter's shorter days and lower sun angles, you may easily find yourself facing the added complication of these illusions at in the first hour after dawn, during dusk and after dark.
Cognitive psychologists Chabris of Union College in Schenectady, NY, and Simons of the University of Illinois, Champaign-Urbana, discuss commonly held beliefs concerning cognitive functions, or "illusions," that impact our decision making process: "the illusions of attention, memory, confidence, knowledge, cause and potential.
This site talks about illusions such as this and features interactive demonstrations where students can see illusions in art, and try to figure out some illusion puzzles.