illusion


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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 ?
Then he flatly told me to shut up, with my tricks of the mirrors, my springs, my revolving doors and my palaces of illusions! He angrily declared that I must be either blind or mad to imagine that all that water flowing over there, among those splendid, numberless trees, was not real water!...And the desert was real!
An illusion that won't convince is a palpable lie, and that's what grand opera is to me when little Barillo throws a fit, clutches mighty Tetralani in his arms (also in a fit), and tells her how passionately he adores her."
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." A stamp started it on its travels, but it was destined to receive many stamps and to be started on many travels in the months that followed.
If this golden rim were quenched, if life were no longer circled by an illusion (but was it an illusion after all?), then it would be too dismal an affair to carry to an end; so he wrote with a sudden spurt of conviction which made clear way for a space and left at least one sentence standing whole.
But after the knowledge of God and of the soul has rendered us certain of this rule, we can easily understand that the truth of the thoughts we experience when awake, ought not in the slightest degree to be called in question on account of the illusions of our dreams.
The optical illusion has gone viral online, leaving many confused.
The rubber hand illusion is a classic sensory illusion based on experiments published in 1998 by Matthew Botvinick and Jonathan D.
People can take photos using trick-art and optical illusion ndash they can float in the air, crawl out of a crack in the ground, hide in a mouse hole from a cat or sit under the water.It is not about reality but a clever combination of colour, mirrors, angles, shadow perspective and the right position of the photographer.
The perfect mix of fun and educational, the Museum of Illusion's exhibits are designed to target a wide audience -- our exhibits rekindle childhood memories among adults and bestow a sense of wonder in children.
Other full-size illusion exhibits include those that allow visitors to see different clones of themselves, and the Infinity Room which gets people to walk in circles as they try and navigate through infinite corridors around an endless space.
"There's this neat auditory illusion called the 'Speech-to-Song Illusion' that musicians in the '60s knew about and used to artistic effect - but scientists didn't start investigating it until the '90s," Michael Vitevitch, one of the authors of the latest study, said in a (http://news.ku.edu/2018/06/04/move-over-laurel-or-yanny-new-study-looks-why-we-perceive-talking-singing-after-hearing) statement.