Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Scotopic_vision> ?p ?o }
Showing triples 1 to 69 of
69
with 100 triples per page.
- Scotopic_vision abstract "Scotopic vision is the vision of the eye under low light conditions. The term comes from Greek skotos meaning darkness and -opia meaning a condition of sight. In the human eye cone cells are nonfunctional in low light – scotopic vision is produced exclusively through rod cells which are most sensitive to wavelengths of light around 498 nm (green-blue) and are insensitive to wavelengths longer than about 640 nm (red).Scotopic vision is dominated by retina amacrine cells, specifically all-amacrine cells. AII-amacrine cells capture rod bipolar cell input and redistribute it to cone bipolar cells since rod-driven bipolar cells do not synapse on ganglion cells. Scotopic vision occurs at luminance levels of 10−3.5 to 10−6 cd/m². Other species are not universally color blind in low-light conditions. The Elephant Hawk-moth (Deilephila elpenor) displays advanced color discrimination even in dim starlight.Mesopic vision occurs in intermediate lighting conditions (luminance level 10−3 to 100.5 cd/m²) and is effectively a combination of scotopic and photopic vision. This however gives inaccurate visual acuity and color discrimination.In normal light (luminance level 10 to 108 cd/m²), the vision of cone cells dominates and is photopic vision. There is good visual acuity (VA) and color discrimination.In scientific literature, one occasionally encounters the term scotopic lux which corresponds to photopic lux, but uses instead the scotopic visibility weighting function.The normal human observer’s relative wavelength sensitivity will not change due to background illumination change under scotopic vision. The wavelength sensitivity is determined by the rhodopsin photopigment. This is a red pigment and can be seen at the back of eye of animals that have a white background to their eye called Tapetum lucidum. The pigment is not noticeable under photopic and mesopic conditions. The principle that the wavelength sensitivity does not change during scotopic vision led to the ability to detect two functional cone classes in individuals. If two cone classes are present, then their relative sensitivity will change the behavioral wavelength sensitivity. Therefore, experimentation can determine “the presence of two cone classes by measuring wavelength sensitivity on two different backgrounds and noting a change in the observer’s relative wavelength sensitivity.”For adaption to occur at very low levels, the human eye needs to have a large sample of light across the signal in order to get a reliable image. This leads to the human eye being unable to resolve high spatial frequencies in low light since the observer is spatially averaging the light signal.The behavior of the rhodopsin photopigment explains why the human eye cannot resolve lights with different spectral power distributions under low light. The reaction of this single photopigment will give the same quanta for 400 nm light and 700 nm light. Therefore, this photopigment only maps the rate of absorption and does not encode information about the relative spectral composition of the light.Another reason that vision is poor under scotopic vision is that rods, which are the only cells active under scotopic vision, converge to a smaller number of neurons in the retina. This many-to-one ratio leads to poor spatial frequency sensitivity.".
- Scotopic_vision thumbnail CIE_1951_scotopic_luminosity_function.svg?width=300.
- Scotopic_vision wikiPageID "1881067".
- Scotopic_vision wikiPageLength "6085".
- Scotopic_vision wikiPageOutDegree "38".
- Scotopic_vision wikiPageRevisionID "680992441".
- Scotopic_vision wikiPageWikiLink Adaptation_(eye).
- Scotopic_vision wikiPageWikiLink Amacrine_cell.
- Scotopic_vision wikiPageWikiLink Ancient_Greek.
- Scotopic_vision wikiPageWikiLink Averted_vision.
- Scotopic_vision wikiPageWikiLink Candela.
- Scotopic_vision wikiPageWikiLink Category:Eye.
- Scotopic_vision wikiPageWikiLink Category:Vision.
- Scotopic_vision wikiPageWikiLink Cone_cell.
- Scotopic_vision wikiPageWikiLink Cone_cells.
- Scotopic_vision wikiPageWikiLink Deilephila_elpenor.
- Scotopic_vision wikiPageWikiLink Human_eye.
- Scotopic_vision wikiPageWikiLink Luminance.
- Scotopic_vision wikiPageWikiLink Mesopic.
- Scotopic_vision wikiPageWikiLink Mesopic_vision.
- Scotopic_vision wikiPageWikiLink Night_vision.
- Scotopic_vision wikiPageWikiLink Photopic.
- Scotopic_vision wikiPageWikiLink Photopic_lux.
- Scotopic_vision wikiPageWikiLink Photopic_vision.
- Scotopic_vision wikiPageWikiLink Photopigment.
- Scotopic_vision wikiPageWikiLink Purkinje_effect.
- Scotopic_vision wikiPageWikiLink Retina_amacrine_cell.
- Scotopic_vision wikiPageWikiLink Rhodopsin.
- Scotopic_vision wikiPageWikiLink Rod_cell.
- Scotopic_vision wikiPageWikiLink Rod_cells.
- Scotopic_vision wikiPageWikiLink Spatial_frequency.
- Scotopic_vision wikiPageWikiLink Tapetum_lucidum.
- Scotopic_vision wikiPageWikiLink Visual_acuity.
- Scotopic_vision wikiPageWikiLink File:AP_-_Scotopic_Vision.jpg.
- Scotopic_vision wikiPageWikiLink File:CIE_1951_scotopic_luminosity_function.svg.
- Scotopic_vision wikiPageWikiLinkText "Scotopic vision".
- Scotopic_vision wikiPageWikiLinkText "Scotopic".
- Scotopic_vision wikiPageWikiLinkText "active in low light".
- Scotopic_vision wikiPageWikiLinkText "black-and-white vision".
- Scotopic_vision wikiPageWikiLinkText "low light".
- Scotopic_vision wikiPageWikiLinkText "natural night vision".
- Scotopic_vision wikiPageWikiLinkText "scotopic (night) vision".
- Scotopic_vision wikiPageWikiLinkText "scotopic vision".
- Scotopic_vision wikiPageWikiLinkText "scotopic".
- Scotopic_vision hasPhotoCollection Scotopic_vision.
- Scotopic_vision wikiPageUsesTemplate Template:Cite_journal.
- Scotopic_vision wikiPageUsesTemplate Template:Reflist.
- Scotopic_vision subject Category:Eye.
- Scotopic_vision subject Category:Vision.
- Scotopic_vision hypernym Vision.
- Scotopic_vision type Athlete.
- Scotopic_vision type Feature.
- Scotopic_vision comment "Scotopic vision is the vision of the eye under low light conditions. The term comes from Greek skotos meaning darkness and -opia meaning a condition of sight.".
- Scotopic_vision label "Scotopic vision".
- Scotopic_vision sameAs Visió_escotòpica.
- Scotopic_vision sameAs Visión_escotópica.
- Scotopic_vision sameAs Vision_scotopique.
- Scotopic_vision sameAs העקומה_הסקוטופית.
- Scotopic_vision sameAs Visione_scotopica.
- Scotopic_vision sameAs 暗所視.
- Scotopic_vision sameAs Widzenie_skotopowe.
- Scotopic_vision sameAs Visão_escotópica.
- Scotopic_vision sameAs m.063bgz.
- Scotopic_vision sameAs Ночное_зрение.
- Scotopic_vision sameAs Q2343133.
- Scotopic_vision sameAs Q2343133.
- Scotopic_vision wasDerivedFrom Scotopic_vision?oldid=680992441.
- Scotopic_vision depiction CIE_1951_scotopic_luminosity_function.svg.
- Scotopic_vision isPrimaryTopicOf Scotopic_vision.