Changes

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.

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 [http://portal.acm.org/citation.cfm?id=1326364.1326487&coll=&dl=&CFID=11849883&CFTOKEN=72040242]. This way in which our brain works is the basis of an illusion.

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 [https://portal.acm.org/citation.cfm?id=1326364.1326487&coll=&dl=&CFID=11849883&CFTOKEN=72040242]. This way in which our brain works is the basis of an illusion.

==Auditory illusions==

==Auditory illusions==

==Tactile illusions==

==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. Tactile illusions can also be elicited through haptic technology[http://www.roblesdelatorre.com/gabriel/GR-VH-Nature2001.pdf]. These "illusory" tactile objects can be used to create "virtual objects" [http://www.technologyreview.com/read_article.aspx?id=17363&ch=biotech&sc=&pg=1]

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. Tactile illusions can also be elicited through haptic technology[https://www.roblesdelatorre.com/gabriel/GR-VH-Nature2001.pdf]. These "illusory" tactile objects can be used to create "virtual objects" [https://www.technologyreview.com/read_article.aspx?id=17363&ch=biotech&sc=&pg=1]

==Other senses==

==Other senses==

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]].

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]].

==Quotation==

==Quotation==

The high mission of any [[art]] is, by its '''illusions''', to foreshadow a higher [[universe]] [[reality]], to crystallize the emotions of [[time]] into the thought of [[eternal|eternity]].[http://mercy.urantia.org/cgi-bin/webglimpse/mfs/usr/local/www/data/papers?link=http://mercy.urantia.org/papers/paper48.html&file=/usr/local/www/data/papers/paper48.html&line=256#mfs]

The high mission of any [[art]] is, by its '''illusions''', to foreshadow a higher [[universe]] [[reality]], to crystallize the emotions of [[time]] into the thought of [[eternal|eternity]].[https://mercy.urantia.org/cgi-bin/webglimpse/mfs/usr/local/www/data/papers?link=https://mercy.urantia.org/papers/paper48.html&file=/usr/local/www/data/papers/paper48.html&line=256#mfs]

==References==

==References==

# Solso, R. L. (2001). Cognitive psychology (6th ed.). Boston: Allyn and Bacon. ISBN 0-205-30937-2

# Solso, R. L. (2001). Cognitive psychology (6th ed.). Boston: Allyn and Bacon. ISBN 0-205-30937-2

==External links==

==External links==

* [http://www.virtuescience.com/universalveiling.html Universal Veiling Techniques]

* [https://www.virtuescience.com/universalveiling.html Universal Veiling Techniques]

* [http://www.metacafe.com/watch/838119/best_rotating_pictures_illusion/ Best Rotating Illusions Video]

* [https://www.metacafe.com/watch/838119/best_rotating_pictures_illusion/ Best Rotating Illusions Video]

* [http://www.metacafe.com/watch/985327/you_will_not_believe_make_your_own_illusion_in_few_sec_o/ Make own Illusion video]

* [https://www.metacafe.com/watch/985327/you_will_not_believe_make_your_own_illusion_in_few_sec_o/ Make own Illusion video]

* [http://www.visualfunhouse.com Illusion Database] Daily Illusions  

* [https://www.visualfunhouse.com Illusion Database] Daily Illusions  

* [http://www.sandlotscience.com/EyeonIllusions/whatisanillusion.htm What is an Illusion?] by J.R. Block.

* [https://www.sandlotscience.com/EyeonIllusions/whatisanillusion.htm What is an Illusion?] by J.R. Block.

* [http://www.michaelbach.de/ot Optical illusions and visual phenomena] by Michael Bach

* [https://www.michaelbach.de/ot Optical illusions and visual phenomena] by Michael Bach

* [http://www.brl.ntt.co.jp/IllusionForum/basics/auditory/index-e.html Auditory illusions]

* [https://www.brl.ntt.co.jp/IllusionForum/basics/auditory/index-e.html Auditory illusions]

* [http://www.roblesdelatorre.com/gabriel/haptics.htm Haptic Perception of Shape] - touch illusions, forces and the geometry of objects, by Gabriel Robles-De-La-Torre.

* [https://www.roblesdelatorre.com/gabriel/haptics.htm Haptic Perception of Shape] - touch illusions, forces and the geometry of objects, by Gabriel Robles-De-La-Torre.

* [http://www.mindhacks.com/blog/2006/05/illusions_of_taste.html Illusions of taste]

* [https://www.mindhacks.com/blog/2006/05/illusions_of_taste.html Illusions of taste]

[[Category: The Arts]]

[[Category: The Arts]]

[[Category: Psychology]]

[[Category: Psychology]]