cone cell

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Related to cone cell: rod cell
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Noun1.cone cell - a visual receptor cell in the retina that is sensitive to bright light and to color
retina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
visual cell - one of the cells of the retina that is sensitive to light
iodopsin - a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Goldmann-Favre syndrome (GFS) is a progressive retinal degeneration that develops due to a mutation in the NR2E3 gene, which has a role in the regulation of cone cell differentiation, and has an autosomal recessive inheritance pattern.
Cone Cell Mosaics in Chick Retinas: A Statistical Analysis.
In fact, most recently, Xu et al [19] succinctly showed that maturing cone cell precursors with mutations in cancer suppressor gene RB1 contained a signalling network with oncogenic effects that resulted in retinoblastoma.
When an S cone cell sends a lot of messages to the brain, we recognise it as the colour blue.
Szel, "Two different visual pigments in one retinal cone cell," Neuron, vol.
Nathan Scott Hart and colleagues said that sharks have only one type of cone cell in their eyes so they can't distinguish between colours.
In comparison, Banks says, "cones have a direct line through the retina to the cortex." Each cone cell in the retina's center sends an unadulterated signal to the brain.
For example, when volunteers looked at tiny points of red light that had a wavelength of 633 nanometers, the color sometimes appeared green--depending on which type of cone cell the beam happened to hit.
Of these cone cells, 64% respond to red light, 32% to green light and 2% to blue light.
Color vision in vertebrates is usually achieved through the interaction of various photopigments in the cone cells found in the retina.
To give some examples, in vertebrate rod and cone cells, opsin-mediated G protein activation leads to hyperpolarization (Takemoto and Cunnick, 1990) via the closure of cyclic nucleotide-gated (CNG) channels, whereas in some bivalves it leads to hyperpolarization via the opening of [K.sup.+] channels (Leung and Montell, 2017).
Colour blindness is an inherited trait and is caused by an alteration in the gene that codes for the photopigment in cone cells. Cone cells are what allow us to have detailed and colour vision.