rod cell


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Related to rod cell: cone cell
Neuroanatomy A retinal photoreceptor for colourless low-light vision
Neuropathology A modified microglial cell that increases in size and number in paretic dementia (3º syphilis) and subacute encephalitides (e.g., encephalitis lethargica and cerebral trypanosomiasis)

rod

(rod)
1. A straight, slender, cylindric structure or device. For surgical rods, see nail;pin
2. The photosensitive, outward-directed process of a rhodopsin-containing rod cell in the external granular layer of the retina; many millions of such rods, together with the cones, form the photoreceptive layer of rods and cones.
Synonym(s): rod cell.
[A.S. rōd]

rod

or

rod cell

a rod-shaped, light-sensitive cell lying in the more peripheral parts of the RETINA in the vertebrate eye. Rods are particularly associated with vision under conditions of low illumination and they occur in large numbers in nocturnal animals. They are not capable of colour discrimination and their visual acuity is poor (compare CONE CELL). RHODOPSIN (visual purple) is found in rods. There are some 240 million rods in the retinas of a primate.see RETINAL CONVERGENCE.

rod

(rod)
1. A straight, slender, cylindric structure or device.
2. The photosensitive, outward-directed process of a rhodopsin-containing rod cell in the external granular layer of the retina.
[A.S. rōd]
References in periodicals archive ?
Single-photon detection by rod cells of the retina, Rev.
Since blindness in people can also be caused by nonworking rod cells, the treatment could be a step toward sight for humans too, says Swaroop.
A--Human eyes have more cone cells, relatively fewer rod cells.
When using "averted vision", you are using the light sensitivity of those outer-lying rod cells. Knowing this can really improve your view of the night sky.
When they deployed the virus into the eyes of the mice, the rhodopsin got incorporated into those non-light-cells and turned them into surrogate rod cells. With this change, mice that were utterly blind before ran away in response to a video of an owl on the hunt.
When using averted vision you are using the light sensitivity of those outer-lying rod cells. Knowing this really improves your view of the night sky.
Like the mirror of a telescope pointed toward the night sky, the eye's rod cells capture the energy of photons - the individual particles that make up light.
To experience your own night vision, sit in a darkened room for 20 minutes to bring your rod cells into action.
Scientists at the Ludwig-Maximilians University Munich in Germany and colleagues discovered the unusual DNA arrangement while investigating genes in the rod cells of mouse eyes, says Boris Joffe, one of the authors of the new study, which appears in the April 17 Cell.
Position-angle bias is due mainly to the uneven distribution of rod cells across the retina.
Rod cells are especially important for seeing in the dark as they are extremely sensitive to even low levels of light.