News tagged with cones
Mars volcanic deposit tells of warm and wet environment
(PhysOrg.com) -- Roughly 3.5 billion years ago, the first epoch on Mars ended. The climate on the red planet then shifted dramatically from a relatively warm, wet period to one that was arid and cold. Yet ...
Space & Earth / Space Exploration
Oct 31, 2010 |
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Funnel vision: New info about how cells in the eye help guide light into the retina
The eyes are marvelous instruments for converting outside reality into images lodged inside our brains. A new study of the retina, the light-sensitive region at the back of the eye, solves a mystery as to ...
May 09, 2010 |
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An 'eye catching' vision discovery
Nearly all species have some ability to detect light. At least three types of cells in the retina allow us to see images or distinguish between night and day. Now, researchers at the Johns Hopkins School of ...
Medicine & Health / Neuroscience
Jul 26, 2009 |
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Researchers discover mechanism that helps humans see in bright and low light
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. ...
Medicine & Health / Neuroscience
Oct 13, 2009 |
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Microbial protein restores vision in blind animals
(PhysOrg.com) -- Scientists from the Friedrich Miescher Institute for Biomedical Research (FMI) restore vision in retinitis pigmentosa using an archaebacterial protein. Introducing halorhodopsin into the remaining ...
Medicine & Health / Medical research
Jul 14, 2010 |
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More than meets the eye to staying awake, alert
Think twice before falling asleep alongside the glare of your computer and TV screens: exposure to dim light from ordinary room lights, computer screens and other electronic devices late at night may be interfering with our ...
May 13, 2010 |
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Biologists gain new insights into brain circuit wiring
(PhysOrg.com) -- Neurobiologists at UC San Diego have discovered new ways by which nerves are guided to grow in highly directed ways to wire the brain during embryonic development.
Medicine & Health / Neuroscience
Feb 14, 2011 |
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Historic first images of rod photoreceptors in the living human eye
Scientists today reported that the tiny light-sensing cells known as rods have been clearly and directly imaged in the living eye for the first time. Using adaptive optics (AO), the same technology astronomers ...
Jun 08, 2011 |
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A turning point for young neurons
During neural development, newborn neurons extend axons toward distant targets then form connections with other cells. This process depends on the growth cone, a dynamic structure at the growing axon tip of ...
Medicine & Health / Neuroscience
Aug 03, 2010 |
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Researcher shows how cone snails developed poison gland from spare gut parts
(PhysOrg.com) -- Canadian Louise Page, associate professor at the University of Victoria, BC, has solved a mystery that has perplexed zoologists since early 19th century naturalists first wondered if venomous ...
May 20, 2011 |
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The difference between eye cells is... sumo?
Researchers at the Johns Hopkins University School of Medicine and Washington University School of Medicine have identified a key to eye development — a protein that regulates how the light-sensing nerve cells in the retina ...
Medicine & Health / Neuroscience
Mar 09, 2009 |
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Nanometer-scale growth of cone cells tracked in living human eye
Humans see color thanks to cone cells, specialized light-sensing neurons located in the retina along the inner surface of the eyeball. The actual light-sensing section of these cells is called the outer segment, which is ...
Dec 20, 2011 |
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Cone snail venom controls pain
Components of the venom from marine cone snails can block the transmission of signals between nerve cells in minute quantities. This makes them potentially suitable for use as a novel analgesic. Researchers ...
Apr 04, 2012 |
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Parts of Mt Fuji 'could collapse' if fault shifts
Parts of Japan's Mount Fuji, a national symbol and key tourist attraction, could collapse if a newly-discovered faultline under the mountain shifts, a government-commissioned report has warned.
Space & Earth / Earth Sciences
May 11, 2012 |
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Cone of poison: The secret behind the cone snail's venom pump
Scientists have discovered the secret of how an amazing sea snail injects its venom after shooting a harpoon-like tooth into its prey -- or some unlucky swimmer -- at jetliner speeds. The creatures, called cone snails, use ...
Oct 27, 2010 |
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