rod cell

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Related to Rod cells: rhodopsin, Cone cells
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 ?
The present study has confirmed these findings and shown that, in terms of numbers of gold particles, the synaptic terminal contains roughly 4 times the amount of phosducin than might be predicted on the basis of a random distribution of molecules throughout the rod cell.
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.
By selectively modulating the visual cycle in rod cells, we believe that ACU-4429 protects cone cells and by extension protects visual acuity.
When using averted vision you are using the light sensitivity of those outer-lying rod cells.
The key light receptor in rod cells is a protein called rhodopsin.
Ali plans to try implanting rod cell precursors made from stem cells.
Those mice with newly transplanted rod cells were able to use a visual cue to quickly find a hidden platform in the maze whereas untreated mice were able to find the hidden platform only by chance after extensive exploration of the maze.
But rod cells in the mouse retina shove active genes to the outside of the nucleus, the researchers found.
In many amphibians, one type of rod cells called green rods naturally express a blue cone pigment, as do blue cones," said Yau.
The blinding disease results from mutations in the gene RPE65, which encodes a protein that helps rod cells in the eye recycle light-gathering pigments.
Genetic factors were not strongly correlated with night vision and the ability to adapt to light level changes, which are performed by retinal rod cells, implying that environmental influences are important to those functions.
Rod cells are very sensitive to light and allow night vision.