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- Cornsweet_illusion abstract "The Cornsweet illusion, also known as the Craik–O'Brien–Cornsweet illusion and the Craik–Cornsweet illusion, is an optical illusion that was described in detail by Tom Cornsweet in the late 1960s. Craik and O'Brien had made earlier observations in a similar vein.In the image at right, the entire region to the right of the "edge" in the middle looks slightly lighter than the area to the left of the edge, but in fact the brightness of both areas is exactly the same, as can be seen by blacking out the region containing the edge. (Here, the actual graded darker and lighter regions around the edge span only 14% of the total width of each half image respectively. The remaining regions are identical but, they do not look so.)This phenomenon is similar to the phenomenon of simultaneous contrast and Mach bands, but differs from it in two important respects.In Mach bands, the effect is seen only on areas that are close to the intensity gradient. In the Craik–O'Brien–Cornsweet illusion, a very small area (the central "edge") affects the perception of entire large areas, portions of which are distant from the edge.In the Cornsweet illusion, the region adjacent to the light part of the edge appears lighter, and the region adjacent to the dark part of the edge appears darker, just the opposite of the usual contrast effects.The third image at right shows the usual explanation of the effect. A far more convincing and dramatic version of the effect can be seen in the article by Purves, Lotto, and Nundy, where it is presented within a quasi-realistic image of solid, illuminated objects. These writers give an explanation of this and other illusions, in which the visual system and brain are posited to generate percepts on an empirical basis that is much like a reflex. In their words, ... [perception] accords not with the features of the retinal stimulus or the properties of the underlying objects, but with what the same or similar stimuli have typically signified in the past.".
- Cornsweet_illusion thumbnail Cornsweet_illusion.svg?width=300.
- Cornsweet_illusion wikiPageExternalLink 8542.
- Cornsweet_illusion wikiPageExternalLink index.html.
- Cornsweet_illusion wikiPageID "426746".
- Cornsweet_illusion wikiPageLength "3744".
- Cornsweet_illusion wikiPageOutDegree "8".
- Cornsweet_illusion wikiPageRevisionID "648300783".
- Cornsweet_illusion wikiPageWikiLink Category:Optical_illusions.
- Cornsweet_illusion wikiPageWikiLink Contrast_effect.
- Cornsweet_illusion wikiPageWikiLink Mach_bands.
- Cornsweet_illusion wikiPageWikiLink Optical_illusion.
- Cornsweet_illusion wikiPageWikiLink Simultaneous_contrast.
- Cornsweet_illusion wikiPageWikiLink Tom_Cornsweet.
- Cornsweet_illusion wikiPageWikiLink Tom_N._Cornsweet.
- Cornsweet_illusion wikiPageWikiLink File:Cornsweet_illusion.svg.
- Cornsweet_illusion wikiPageWikiLink File:Cornsweet_illusion_black_band.svg.
- Cornsweet_illusion wikiPageWikiLink File:Cornsweet_illusion_explanation.svg.
- Cornsweet_illusion wikiPageWikiLinkText "Cornsweet illusion".
- Cornsweet_illusion wikiPageWikiLinkText "Craik-O' Brien-Cornsweet illusion".
- Cornsweet_illusion wikiPageWikiLinkText "effect that bears his name".
- Cornsweet_illusion hasPhotoCollection Cornsweet_illusion.
- Cornsweet_illusion wikiPageUsesTemplate Template:Optical_illusions.
- Cornsweet_illusion wikiPageUsesTemplate Template:Reflist.
- Cornsweet_illusion subject Category:Optical_illusions.
- Cornsweet_illusion hypernym Illusion.
- Cornsweet_illusion type Film.
- Cornsweet_illusion type Illusion.
- Cornsweet_illusion comment "The Cornsweet illusion, also known as the Craik–O'Brien–Cornsweet illusion and the Craik–Cornsweet illusion, is an optical illusion that was described in detail by Tom Cornsweet in the late 1960s.".
- Cornsweet_illusion label "Cornsweet illusion".
- Cornsweet_illusion sameAs Illusion_de_Cornsweet.
- Cornsweet_illusion sameAs クレイク・オブライエン・コーンスウィート錯視.
- Cornsweet_illusion sameAs m.0274c6.
- Cornsweet_illusion sameAs Cornsweets_illusion.
- Cornsweet_illusion sameAs Q3069747.
- Cornsweet_illusion sameAs Q3069747.
- Cornsweet_illusion wasDerivedFrom Cornsweet_illusion?oldid=648300783.
- Cornsweet_illusion depiction Cornsweet_illusion.svg.
- Cornsweet_illusion isPrimaryTopicOf Cornsweet_illusion.