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illusion

 
Dictionary: il·lu·sion   (ĭ-lū'zhən) pronunciation
illusion
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illusion

In a Hering figure, straight horizontal rules appear curved.
In Gestalt theory boxes, a gray box against a black background appears lighter than the same gray box against a white background.
(Academy Artworks)
n.
    1. An erroneous perception of reality.
    2. An erroneous concept or belief.
  1. The condition of being deceived by a false perception or belief.
  2. Something, such as a fantastic plan or desire, that causes an erroneous belief or perception.
  3. Illusionism in art.
  4. A fine transparent cloth, used for dresses or trimmings.

[Middle English, from Old French, from Late Latin illūsiō, illūsiōn-, from Latin, a mocking, irony, from illūsus, past participle of illūdere, to mock : in-, against; see in-2 + lūdere, to play.]

illusional il·lu'sion·al or il·lu'sion·ar'y (-zhə-nĕr'ē) adj.
illusionless il·lu'sion·less adj.

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Thesaurus: illusion
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Antonyms: illusion
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n

Definition: false appearance; false belief
Antonyms: certainty, event, fact, reality, truth


Dental Dictionary: illusion
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n

A mistaken or erroneous perception of an object external to the individual. In some cases, the laws of physics explain the errors. In others, the explanation lies with the perceiver. Illusions should be distinguished from hallucinations, which are perceptions that lack external stimuli, and delusions, which are false beliefs. Illusions are seen in certain reactions to general anesthesia or intoxication.

1. A sensory perception considered as mistaken because it does not conform with an objective representation of a physical form or pattern.

2. A subjective falsification of past experience.

Psychoanalysis: Illusion
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Illusion is an error experienced by someone who is misled (illudere) by the nature of evidence or the seductive appearance of something that deceives. The deceiver may be personified (Descartes's "evil genius") or limited to a physical or physiological cause (the illusions of the senses), or even an ontological structure (the Platonic myth of the cave). However, the subject can create his own illusion by taking his desires for reality. It is this last formulation that is embodied in the Freudian approach to illusion, defined as a belief primarily motivated by the realization of a desire. To that extent the illusion has much in common with dreams and dreaming, where the philosophers of antiquity had situated it.

The concept of illusion in Freud is gradually developed, reaching its culmination in The Future of an Illusion (1927c). In the Project for a Scientific Psychology (1950c [1895]), illusion is confused with hallucination in the context of perceptual illusion. But with the Psychopathology of Everyday Life (1901b), the concept is further refined. In Freud's case it would be wrong to qualify the feeling of déjà vu or déjà éprouvé as illusion, because theycorrespond, through displacement and concealment, to an authentic unconscious daydream. Thirty-five years later in "A Disturbance of Memory on the Acropolis," Freud would refer to false recognition (déjà vu, déjà raconté) as a part of the "illusions in which we seek to accept something as belonging to our ego, just as in the derealizations we are anxious to keep something out of us" (1936a, p. 245).

There is a certain amount of ambiguity concerning the simple criterion that defines illusion as something that doesn't exist in reality, to the extent that the concept of reality is reconsidered in psychoanalysis as mental reality. Moreover, the single stable criterion used to define illusion in psychoanalysis is a belief motivated by the realization of desire: "[W]e will call a belief an illusion when a wish-fulfilment is a prominent factor in its motivation, and in doing so we disregard its relations to reality, just as the illusion itself sets no store by verification" (1927c, p. 31).

Freud identifies illusion as being mostly associated with religion, art, and philosophy, but he also acknowledges the hypothesis that science itself could be an illusion, although he rejects it. In a deeper sense the greatest illusion would be the belief in the happiness and goodness of human nature. This pessimism, or realism, is first associated with the illusion that lasting sexual satisfaction is possible ("'Civilized' Sexual Morality and Modern Nervous Illness," 1908d) and that social rules should be modified to procure happiness for individuals. Freud then assumes the position of a defender of a realist position, which includes negativity instead of ignoring it: "Because we destroy illusion we are accused of endangering ideals" (1910d, p. 147). In fact the only ideal he defends is that of truth. He further distinguishes two types of illusions: those that are not harmful since the illusion is obvious, and those that are dangerous because they take the place of an objective apprehension of reality (philosophy, ideology, and especially religion).

To the first category belongs art, which is said to evolve from magic and which, as an artistic illusion, produces the same affective effects as if it involved something real (1912-1913a). "Art is said to be almost always harmless and beneficent; it does not seek to be anything but an illusion." (1933a [1932], p. 160). In what sense is art an illusion? Freud is forced to make use of the concept of reality to determine this. "The substitutive satisfactions, as offered by art, are illusions in contrast with reality, but they are none the less psychically effective, thanks to the role which phantasy has assumed in mental life" (1930a [1929], p. 75). Illusion, and especially the ability to take pleasure in it, would therefore be the result of the magical omnipotence associated with the beginnings of mental life, which led to the separation of the life of the imagination from the mental life grafted to reality, "At the time when the development of the sense of reality took place, this region [imagination] was expressly exempted from the demands of reality-testing and was set apart for the purpose of fulfilling wishes which were difficult to carry out" (1930a [1929], p. 80).

But reality-testing is difficult to manage when defining illusion. Freud emphasizes it when he distinguishes illusion from delusion: "Illusions need not necessarily be false—that is to say, unrealizable or in contradiction to reality" (1927c, p. 31). The example chosen (the illusion of a young woman of modest means of being able to marry a prince) is not convincing, because within the framework of erotomaniacal delusion, that same idea (not illusory since it is realizable, Freud says) would indeed appear to contradict reality. We could therefore say that delusion has more to do with a difference in "temporality"—hope and expectation in one case, real certainty on the other.

The difference between the potential reality of the content of the illusion and the belief in its actual reality is what allows reality testing to be used to define the illusion. Illusion primarily involves the Weltanschauung and, in this regard, Freud emphasized religious illusion. All religious doctrines are "illusions and insusceptible of proof. No one can be compelled to think them true, to believe in them" (1927c, p. 31). The desire they realize is that of being protected and loved by a father who is more powerful than the real father. Infantile distress is the origin of religious need, which Freud criticizes because of the weight it places on education. He also feels—and this may sound paradoxical—that it is necessary to maintain religious teaching as a basis of education and human life in common. "If you want to expel religion from our European civilization, you can only do it by means of another system of doctrines; and such a system would from the outset take over all the psychological characteristics of religion—the same sanctity, rigidity and intolerance, the same prohibition of thought—for its own defense" (p. 51). In other words even if for Freud religion is a "serious enemy" of science, it would be an illusion to believe that it is possible to renounce belief for the benefit of knowledge alone.

The philosophical illusion that believes it can deliver an image of the world that is coherent and without gaps is undermined by the progress of science; and political illusion, such as communism, is an example of a substitute for religion. The struggle against illusion is therefore a battle that will only yield incomplete results, following a process of maturation that is never realized: "Since we are prepared to renounce a good part of our infantile wishes, we can bear it if a few of our expectations turn out to be illusions" (1927c, p. 54).

In psychoanalysis the concept of illusion has, in the work of Donald Woods Winnicott, undergone a completely different development than it has in Freud. Winnicott (1953/1971) defines illusion as the necessary adaptation of the mother to the needs of the baby, which allows her to experiment with narcissistic omnipotence from the beginning. This phase corresponds to the primary creativity of the infant and is prolonged during adulthood in art and religion. Winnicott's ideas extended Freudian theories of the "purified pleasure ego" and the "reality test." Winnicott postulates the existence of "intermediate state between a baby's inability and growing ability to recognize and accept reality" (1953, p. 90). This ability is strictly dependent on what the mother allows the baby to feel. "The mother's adaptation to the infant's needs, when good enough, gives the infant the illusion that there is an external reality that corresponds to the infant's own capacity to create"(p. 95).

In other words, the reality test is experienced as a frontal shock, but the reality is initially constructed by the baby who perceives it as being part of himself. During a subsequent period, it will appear to be independent, but only gradually: "The mother's eventual task is gradually to disillusion the infant, but she has no hope of success unless at first she has been able to give sufficient opportunity for illusion" (p. 95). But illusion as a form remains and serves as a binding factor: "We can share a respect for illusory experience, and if we wish we may collect together and form a group on the basis of the similarity of our illusory experiences. This is a natural root of grouping among human beings" (p. 90).

This differs from the Freudian point of view, which remains dependent on a certain proscientific militancy, while Winnicott situates himself at a level that is both more metaphysical and more affective. "It is assumed here that the task of reality-acceptance is never completed, that no human being is free from the strain of relating inner and outer reality, and that relief from this strain is provided by an intermediate area of experience which is not challenged (arts, religion, etc.). This intermediate area is in direct continuity with the play area of the small child who is 'lost' in play" (p. 95).

Bibliography

Freud, Sigmund. (1901b). The psychopathology of everyday life. SE,6.

——. (1927c). The future of an illusion. SE, 21: 1-56.

——. (1933a [1932]). New introductory lectures on psycho-analysis. SE, 22: 1-182.

——. (1936a). A disturbance of memory on the Acropolis (an open letter to Romain Rolland on the occasion of his seventieth birthday). SE, 22: 239-248.

Winnicott, D. W. (1953). Transitional objects and transitional phenomena, a study of the first not-me possession. International Journal of Psycho-Analysis, 34, 89-97. Additional material in (1971). Playing and reality (pp. 1-30). London: Tavistock.

—SOPHIEDE MIJOLLA-MELLOR

Sensory perception originated by an actual sensory stimulus to which wrong interpretation is attached.

Word Tutor: illusion
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pronunciation

IN BRIEF: A false impression or belief.

pronunciation The great obstacle to discovery is not ignorance, it is the illusion of knowledge. — Daniel J. Boorstin, U.S. historian; librarian, Library of Congress, Pulitzer-prize winning author.

Tutor's tip: These words sound the same but have different meanings. An allusion is an indirect reference. An elusion is a deception or clever evasion. Elution is a word used in chemistry that means to remove by dissolving. An illusion is a false or unrealistic impres

Quotes About: Illusion
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Quotes:

"The one person who has more illusions than the dreamer is the man of action." - Oscar Wilde

"Artists use frauds to make human beings seem more wonderful than they really are. Dancers show us human beings who move much more gracefully than human beings really move. Films and books and plays show us people talking much more entertainingly than people." - Kurt Vonnegut Jr.

"It isn't safe to sit in judgment upon another person's illusion when you are not on the inside. While you are thinking it is a dream, he may be knowing it is a planet." - Mark Twain

"Disillusion is a natural stage that follows the holding of an illusion." - Susan Shaughnessy

"A hallucination is a fact, not an error; what is erroneous is a judgment based upon it." - Bertrand Russell

"The fundamental delusion of humanity is to suppose that I am here and you are out there." - Yasutani Roshi

See more famous quotes about Illusion

Wikipedia: Illusion
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An illusion 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.[1] Illusions may occur with more of the human senses than vision, but visual illusions, optical illusions, are the most well known and understood. The emphasis on visual illusions occurs because vision often dominates the other senses. For example, individuals watching a ventriloquist will perceive the voice is coming from the dummy since they are able to see the dummy mouth the words.[2] Some illusions are based on general assumptions the brain makes during perception. These assumptions are made using organizational principles, like Gestalt, an individual's ability of depth perception and motion perception, and perceptual constancy. Other illusions occur because of biological sensory structures within the human body or conditions outside of the body within one’s physical environment.

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. For example, hearing voices regardless of the environment would be a hallucination, whereas hearing voices in the sound of running water (or other auditory source) would be an illusion.

Mimes are known for a repertoire of illusions that are created by physical means. The mime artist creates an illusion of acting upon or being acted upon by an unseen object. These illusions exploit the audience's assumptions about the physical world. Well known examples include "walls", "climbing stairs", "leaning", "descending ladders", "pulling and pushing" etc.

Contents

Optical illusions

An optical illusion. Square A is exactly the same shade of grey as Square B. See Same color illusion

An optical illusion is always characterized by visually perceived images that, at least in common sense terms, are deceptive or misleading. Therefore, the information gathered by the eye is processed by the brain to give, on the face of it, a percept that does not tally with a physical measurement of the stimulus source. A conventional assumption is that there are physiological illusions that occur naturally and cognitive illusions that can be demonstrated by specific visual tricks that say something more basic about how human perceptual systems work. The human brain constructs a world inside our head based on what it samples from the surrounding environment. However sometimes it tries to organise this information it thinks best while other times it fills in the gaps.[3] This way in which our brain works is the basis of an illusion.

Auditory illusions

An auditory illusion is an illusion of hearing, the sound equivalent of an optical illusion: the listener hears either sounds which are not present in the stimulus, or "impossible" sounds. In short, audio illusions highlight areas where the human ear and brain, as organic, makeshift tools, differ from perfect audio receptors (for better or for worse). One of example of an auditory illusions is a Shepard tone. that is right

Tactile illusions

Examples of tactile illusions include phantom limb, the thermal grill illusion, the cutaneous rabbit illusion and a curious illusion that occurs when the crossed index and middle fingers are run along the bridge of the nose with one finger on each side, resulting in the perception of two separate noses. Interestingly, the brain areas activated during illusory tactile perception are similar to those activated during actual tactile stimulation.[4] Tactile illusions can also be elicited through haptic technology.[5] These "illusory" tactile objects can be used to create "virtual objects".[6]

Other senses

Illusions can occur with the other senses including that of taste and smell. It was discovered that even if some portion of the taste receptor on the tongue became damaged that illusory taste could be produced by tactile stimulation.[7] Evidence of olfactory (smell) illusions occurred when positive or negative verbal labels were given prior to olfactory stimulation.[8]

Disorders

Some illusions occur as result of an illness or a disorder. While these types of illusions are not shared with everyone they are typical of each condition. For example migraine suffers often report Fortification illusions.

Philosophy and Illusion

Just like many other words often used in a different sense in spirituality the word "illusion" is used to denote different aspects in Hindu Philosphy (Maya). Many Monist philosophies clearly demarcate illusion from truth and falsehood. As per Hindu advaita philosophy, Illusion is something which is not true and not false. Whereas in general usage it is common to assume that illusion is false Hindu philosophy makes a distinction between Maya (illusion) and falsehood. In terms of this philosophy maya is true in itself but it is not true in comparison with the truth. As per this philosophy, illusion is not the opposite of truth or reality. Based on these assumptions Vedas declare that the world as humans normally see is illusion (Maya). It does not mean world is not real. The world is only so much real as the image of a person in a mirror. The world is not real/true when compared to the reality. But the world is also not false. Falsehood is something which does not exist. if we apply this philosophy to the above example, the illusion is not actually illusion but is false. This is because in general usage people tend to consider lllusion is same as falsehood. As per adishankar's a guru of monist teachings the world we think is true is not true but is an illusion (not true not false). The truth of the world is something which can only be experienced by removing the identity (ego).

See also

References

  1. ^ Solso, R. L. (2001). Cognitive psychology (6th ed.). Boston: Allyn and Bacon. ISBN 0-205-30937-2
  2. ^ McGurk,Hj. & MacDonald, J.(1976). "Hearing lips and seeing voices", Nature 264, 746-748.
  3. ^ Yoon Mo Jung and Jackie (Jianhong) Shen (2008), J. Visual Comm. Image Representation, 19(1):42-55, First-order modeling and stability analysis of illusory contours.
  4. ^ Gross, L 2006 THIS REFERENCE IS INCOMPLETE
  5. ^ Robles-De-La-Torre & Hayward 2001
  6. ^ The Cutting Edge of Haptics (MIT Technology Review article)
  7. ^ Todrank, J & Bartoshuk, L.M., 1991
  8. ^ Herz R. S. & Von Clef J., 2001

External links


Misspellings: illusion
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Common misspelling(s) of illusion

  • illution
  • alusion

Translations: Illusion
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Dansk (Danish)
n. - illusion, falsk forestilling, selvbedrag

idioms:

  • have no illusions    ikke have nogen illusioner
  • under the illusion    under den falske forestilling

Nederlands (Dutch)
illusie, zinsbegoocheling, porseleintule

Français (French)
n. - illusion

idioms:

  • have no illusions    ne se faire aucune illusion
  • under the illusion    (avoir) l'illusion (que)

Deutsch (German)
n. - Illusion, Täuschung

idioms:

  • have no illusions    sich keine Illusionen über etwas machen
  • under the illusion    sich Illusionen machen

Ελληνική (Greek)
n. - αυταπάτη, πλάνη, παραίσθηση, ψευδαίσθηση

idioms:

  • have no illusions    δεν έχω αυταπάτες/ψευδαισθήσεις
  • under the illusion    έχω την ψευδαίσθηση/απατηλή εντύπωση

Italiano (Italian)
illusione

idioms:

  • have no illusions    non farsi illusioni
  • under the illusion    nell'illusione

Português (Portuguese)
n. - ilusão (f)

idioms:

  • have no illusions    não ter ilusões (f pl)
  • under the illusion    com a ilusão de

Русский (Russian)
иллюзия

idioms:

  • have no illusions    не предаваться иллюзиям
  • under the illusion    обольщаться мыслью

Español (Spanish)
n. - ilusión, apariencia, espejismo

idioms:

  • have no illusions    no tener ilusiones, ser realista acerca de un proyecto o deseo
  • under the illusion    estar equivocado, creer o hacerse ilusiones, en la ilusión de, bajo el hechizo de

Svenska (Swedish)
n. - illusion, villfarelse, dröm, tunn tyll (gasväv), spöke

中文(简体)(Chinese (Simplified))
幻影, 幻想, 错觉

idioms:

  • have no illusions    不存幻想
  • under the illusion    抱有幻想, 存有幻想

中文(繁體)(Chinese (Traditional))
n. - 幻影, 幻想, 錯覺

idioms:

  • have no illusions    不存幻想
  • under the illusion    抱有幻想, 存有幻想

한국어 (Korean)
n. - 환각, 착각, 투명한 명주 망사

idioms:

  • have no illusions    잘못 생각하고 있지 않다
  • under the illusion    잘못 생각하는

日本語 (Japanese)
n. - 幻覚, 幻影, 錯覚, 幻想, 透明な絹網

idioms:

  • have no illusions    思い違いをしていない

العربيه (Arabic)
‏(الاسم) وهم, انخداع‏

עברית (Hebrew)
n. - ‮אשליה, תעתוע, הזיה‬


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