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- Cone_cell abstract "Cone cells, or cones, are one of the two types of photoreceptor cells that are in the retina of the eye which are responsible for color vision as well as eye color sensitivity; they function best in relatively bright light, as opposed to rod cells that work better in dim light. Cone cells are densely packed in the fovea centralis a 0.3 mm diameter rod-free area with very thin, densely packed cones, but quickly reduce in number towards the periphery of the retina. There are about six to seven million cones in a human eye and are most concentrated towards the macula.A commonly cited figure of six million in the human eye was found by Osterberg in 1935. Oyster's textbook (1999) cites work by Curcio et al. (1990) indicating an average close to 4.5 million cone cells and 90 million rod cells in the human retina.Cones are less sensitive to light than the rod cells in the retina (which support vision at low light levels), but allow the perception of colour. They are also able to perceive finer detail and more rapid changes in images, because their response times to stimuli are faster than those of rods. Cones are normally one of the three types, each with different pigment, namely: S-cones, M-cones and L-cones. Each cone is therefore sensitive to visible wavelengths of light that correspond to long-wavelength, medium-wavelength and short-wavelength light. Because humans usually have three kinds of cones with different photopsins, which have different response curves and thus respond to variation in colour in different ways, we have trichromatic vision. Being colour blind can change this, and there have been some verified reports of people with four or more types of cones, giving them tetrachromatic vision.The three pigments responsible for detecting light have been shown to vary in their exact chemical composition due to genetic mutation; different individuals will have cones with different color sensitivity. Destruction to the cone cells from disease would result in blindness.".
- Cone_cell thumbnail Cones_SMJ2_E.svg?width=300.
- Cone_cell wikiPageExternalLink main?stype=lite&keyword=cone&Submit=Go&event=display&start=1.
- Cone_cell wikiPageExternalLink photo1.html.
- Cone_cell wikiPageExternalLink 33.
- Cone_cell wikiPageExternalLink search.php?q=Cone%20Cell&t=data&s=cover&b=0&r=20.
- Cone_cell wikiPageID "534710".
- Cone_cell wikiPageRevisionID "605581292".
- Cone_cell captionNeuron "Normalized responsivity spectra of human cone cells, S, M, and L types".
- Cone_cell function "Color vision".
- Cone_cell hasPhotoCollection Cone_cell.
- Cone_cell imageNeuron "Cones SMJ2 E.svg".
- Cone_cell neurolex "Cone Cell".
- Cone_cell neurolexid "sao1103104164".
- Cone_cell neuronName "Cone cell".
- Cone_cell subject Category:Human_cells.
- Cone_cell subject Category:Human_eye_anatomy.
- Cone_cell subject Category:Neurons.
- Cone_cell subject Category:Photoreceptor_cells.
- Cone_cell comment "Cone cells, or cones, are one of the two types of photoreceptor cells that are in the retina of the eye which are responsible for color vision as well as eye color sensitivity; they function best in relatively bright light, as opposed to rod cells that work better in dim light. Cone cells are densely packed in the fovea centralis a 0.3 mm diameter rod-free area with very thin, densely packed cones, but quickly reduce in number towards the periphery of the retina.".
- Cone_cell label "Cellula cono".
- Cone_cell label "Cone (célula)".
- Cone_cell label "Cone cell".
- Cone_cell label "Cono (célula)".
- Cone_cell label "Czopki".
- Cone_cell label "Cône (biologie)".
- Cone_cell label "Kegeltje".
- Cone_cell label "Zapfen (Auge)".
- Cone_cell label "Колбочки".
- Cone_cell label "خلية مخروطية".
- Cone_cell label "视锥细胞".
- Cone_cell label "錐体細胞".
- Cone_cell sameAs Čípek_(oko).
- Cone_cell sameAs Zapfen_(Auge).
- Cone_cell sameAs Cono_(célula).
- Cone_cell sameAs Kono_(zelula).
- Cone_cell sameAs Cône_(biologie).
- Cone_cell sameAs Reseptor_warna.
- Cone_cell sameAs Cellula_cono.
- Cone_cell sameAs 錐体細胞.
- Cone_cell sameAs 원추세포.
- Cone_cell sameAs Kegeltje.
- Cone_cell sameAs Czopki.
- Cone_cell sameAs Cone_(célula).
- Cone_cell sameAs m.02mktm.
- Cone_cell sameAs Q147298.
- Cone_cell sameAs Q147298.
- Cone_cell wasDerivedFrom Cone_cell?oldid=605581292.
- Cone_cell depiction Cones_SMJ2_E.svg.
- Cone_cell isPrimaryTopicOf Cone_cell.
