News tagged with cones
Progression of retinal disease linked to cell starvation
Dec 07, 2008 |
5 / 5 (3) |
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Rods and cones coexist peacefully in healthy retinas. Both types of cells occupy the same layer of tissue and send signals when they detect light, which is the first step in vision. The incurable eye disease Retinitis Pigmentosa, ...
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Researchers discover mechanism that helps humans see in bright and low light
Medicine & Health / Neuroscience
Oct 13, 2009 |
4.9 / 5 (9) |
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Ever wonder how your eyes adjust during a blackout? When we go from light to near total darkness, cells in the retina must quickly adjust. Vision scientists at Washington University School of Medicine in St. ...
There is more to bats' vision than meets the eye
Jul 28, 2009 |
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The eyes of nocturnal bats possess two spectral cone photoreceptor types for daylight and colour vision. Reporting in the open-access, peer-reviewed journal PLoS ONE, scientists at the Max Planck Institute for Br ...
Living fossils have hot sex
Biology /
Oct 04, 2007 |
3.7 / 5 (15) |
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University of Utah scientists discovered a strange method of reproduction in primitive plants named cycads: The plants heat up and emit a toxic odor to drive pollen-covered insects out of male cycad cones, ...
Fruit Bats are not 'Blind as a Bat'
Biology /
Jun 12, 2007 |
4.2 / 5 (5) |
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The retinas of most mammals contain two types of photoreceptor cells, the cones for daylight vision and colour vision, and the more sensitive rods for night vision. Nocturnal bats were traditionally believed ...
Study: Martian volcanoes might be active
Sep 06, 2005 |
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British scientists say fields of volcanic cones discovered at the North Pole of Mars suggest the Red Planet might still be geologically active.
'Gecko vision': Key to the multifocal contact lens of the future?
May 07, 2009 |
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Nocturnal geckos are among the very few living creatures able to see colors at night, and scientists' discovery of series of distinct concentric zones may lead to insight into better cameras and contact lenses.
The gene for day blindness in the dachshund has been found
May 27, 2009 |
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A PhD project by Anne Caroline Wiik has discovered the genetic cause of day blindness or "cone-rod dystrophy” in the wire-haired dachshund. The disease was discovered in two litter mates in 1999 and has since ...
Human vision inadequate for research on bird vision
Biology /
May 12, 2008 |
4.8 / 5 (12) |
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The most attractive male birds attract more females and as a result are most successful in terms of reproduction. This is the starting point of many studies looking for factors that influence sexual selection in birds. However, ...
Bright lights, not-so-big pupils
Dec 31, 2008 |
4.2 / 5 (6) |
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A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature.
Mutated gene in zebrafish sheds light on blindness in humans
Mar 24, 2009 |
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Among zebrafish, the eyes have it. Inside them is a mosaic of light-sensitive cells whose structure and functions are nearly identical to those of humans. There, biologists at The Florida State University ...
List of search results for cones
