Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Cone cell

+ Save concept

Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye). [1]

46 relations: Afterimage, Aphakia, Bipolar neuron, Cell membrane, Cell nucleus, Cilium, Color blindness, Color vision, Cone, Cone dystrophy, Cornea, Disc shedding, Double cone (biology), Fovea centralis, Human eye, Inner plexiform layer, Lens (anatomy), Light, Macula of retina, Mammal, Melanopsin, Micrometre, Mitochondrion, Nanometre, Neural adaptation, Neuroscience Information Framework, Opponent process, Organelle, Phagocytosis, Photobleaching, Photopsin, Photoreceptor cell, Protein, Responsivity, Retina, Retina bipolar cell, Retinoblastoma, RG color space, Rod cell, Stiles–Crawford effect, Synapse, Tetrachromacy, The Independent, Transmembrane protein, Trichromacy, Ultraviolet.


An afterimage is an image that continues to appear in one's vision after the exposure to the original image has ceased.

New!!: Cone cell and Afterimage · See more »


Aphakia is the absence of the lens of the eye, due to surgical removal, a perforating wound or ulcer, or congenital anomaly.

New!!: Cone cell and Aphakia · See more »

Bipolar neuron

A bipolar neuron or bipolar cell, is a type of neuron which has two extensions.

New!!: Cone cell and Bipolar neuron · See more »

Cell membrane

The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space).

New!!: Cone cell and Cell membrane · See more »

Cell nucleus

In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel or seed) is a membrane-enclosed organelle found in eukaryotic cells.

New!!: Cone cell and Cell nucleus · See more »


A cilium (the plural is cilia) is an organelle found in eukaryotic cells.

New!!: Cone cell and Cilium · See more »

Color blindness

Color blindness, also known as color vision deficiency, is the decreased ability to see color or differences in color.

New!!: Cone cell and Color blindness · See more »

Color vision

Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

New!!: Cone cell and Color vision · See more »


A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.

New!!: Cone cell and Cone · See more »

Cone dystrophy

A cone dystrophy is an inherited ocular disorder characterized by the loss of cone cells, the photoreceptors responsible for both central and color vision.

New!!: Cone cell and Cone dystrophy · See more »


The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber.

New!!: Cone cell and Cornea · See more »

Disc shedding

Disc shedding is the process by which photoreceptors in the eye are renewed.

New!!: Cone cell and Disc shedding · See more »

Double cone (biology)

Double cones (DCs), known as twin cones when the two members are the same, are two cone cells (colour detecting photoreceptors) joined together that may also be coupled optically/electrically.

New!!: Cone cell and Double cone (biology) · See more »

Fovea centralis

The fovea centralis is a small, central pit composed of closely packed cones in the eye.

New!!: Cone cell and Fovea centralis · See more »

Human eye

The human eye is an organ which reacts to light and pressure.

New!!: Cone cell and Human eye · See more »

Inner plexiform layer

The inner plexiform layer is an area of the retina that is made up of a dense reticulum of fibrils formed by interlaced dendrites of retinal ganglion cells and cells of the inner nuclear layer.

New!!: Cone cell and Inner plexiform layer · See more »

Lens (anatomy)

The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.

New!!: Cone cell and Lens (anatomy) · See more »


Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

New!!: Cone cell and Light · See more »

Macula of retina

The macula or macula lutea is an oval-shaped pigmented area near the center of the retina of the human eye and some other animalian eyes.

New!!: Cone cell and Macula of retina · See more »


Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.

New!!: Cone cell and Mammal · See more »


Melanopsin is a type of photopigment belonging to a larger family of light-sensitive retinal proteins called opsins and encoded by the gene Opn4.

New!!: Cone cell and Melanopsin · See more »


The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".

New!!: Cone cell and Micrometre · See more »


The mitochondrion (plural mitochondria) is a double-membrane-bound organelle found in most eukaryotic organisms.

New!!: Cone cell and Mitochondrion · See more »


The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).

New!!: Cone cell and Nanometre · See more »

Neural adaptation

Neural adaptation or sensory adaptation is a change over time in the responsiveness of the sensory system to a constant stimulus.

New!!: Cone cell and Neural adaptation · See more »

Neuroscience Information Framework

The Neuroscience Information Framework is a repository of global neuroscience web resources, including experimental, clinical, and translational neuroscience databases, knowledge bases, atlases, and genetic/genomic resources and provides many authoritative links throughout the neuroscience portal of Wikipedia.

New!!: Cone cell and Neuroscience Information Framework · See more »

Opponent process

The color opponent process is a color theory that states that the human visual system interprets information about color by processing signals from cones and rods in an antagonistic manner.

New!!: Cone cell and Opponent process · See more »


In cell biology, an organelle is a specialized subunit within a cell that has a specific function, in which their function is vital for the cell to live.

New!!: Cone cell and Organelle · See more »


In cell biology, phagocytosis is the process by which a cell—often a phagocyte or a protist—engulfs a solid particle to form an internal compartment known as a phagosome.

New!!: Cone cell and Phagocytosis · See more »


In optics, photobleaching (sometimes termed fading) is the photochemical alteration of a dye or a fluorophore molecule such that it permanently is unable to fluoresce.

New!!: Cone cell and Photobleaching · See more »


Photopsins (also known as Cone opsins) are the photoreceptor proteins found in the cone cells of the retina that are the basis of color vision.

New!!: Cone cell and Photopsin · See more »

Photoreceptor cell

A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.

New!!: Cone cell and Photoreceptor cell · See more »


Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

New!!: Cone cell and Protein · See more »


Responsivity measures the input–output gain of a detector system.

New!!: Cone cell and Responsivity · See more »


The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

New!!: Cone cell and Retina · See more »

Retina bipolar cell

As a part of the retina, bipolar cells exist between photoreceptors (rod cells and cone cells) and ganglion cells.

New!!: Cone cell and Retina bipolar cell · See more »


Retinoblastoma (Rb) is a rare form of cancer that rapidly develops from the immature cells of a retina, the light-detecting tissue of the eye.

New!!: Cone cell and Retinoblastoma · See more »

RG color space

The RG or red-green color space is a color space that uses only two colors, red and green.

New!!: Cone cell and RG color space · See more »

Rod cell

Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells.

New!!: Cone cell and Rod cell · See more »

Stiles–Crawford effect

The Stiles–Crawford effect (subdivided into the Stiles–Crawford effect of the first and second kind) is a property of the human eye that refers to the directional sensitivity of the cone photoreceptors.

New!!: Cone cell and Stiles–Crawford effect · See more »


In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target efferent cell.

New!!: Cone cell and Synapse · See more »


Tetrachromacy is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cells in the eye.

New!!: Cone cell and Tetrachromacy · See more »

The Independent

The Independent is a British online newspaper.

New!!: Cone cell and The Independent · See more »

Transmembrane protein

A transmembrane protein (TP) is a type of integral membrane protein that spans the entirety of the biological membrane to which it is permanently attached.

New!!: Cone cell and Transmembrane protein · See more »


Trichromacy or trichromatism is the possessing of three independent channels for conveying color information, derived from the three different types of cone cells in the eye.

New!!: Cone cell and Trichromacy · See more »


Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.

New!!: Cone cell and Ultraviolet · See more »

Redirects here:

Color receptors, Colour receptors, Cone (cell), Cone (eye), Cone (retina), Cone (vision), Cone cells, Cone photoreceptor, Cones (eye), Cones (eyes), Cones (retina), Retina cone cell, Retinal cone, Retinal cones.


[1] https://en.wikipedia.org/wiki/Cone_cell

Hey! We are on Facebook now! »