News tagged with light
Tiny wireless injectable LED device shines light on mouse brain, generating reward
Using a miniature electronic device implanted in the brain, scientists have tapped into the internal reward system of mice, prodding neurons to release dopamine, a chemical associated with pleasure.
Neuroscience
Apr 11, 2013 |
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Moving cells with light holds medical promise
Scientists at Washington University School of Medicine in St. Louis have shown they can coax cells to move toward a beam of light. The feat is a first step toward manipulating cells to control insulin secretion ...
Medical research
Apr 08, 2013 |
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Resetting addicted brain: Laser light zaps away cocaine addiction
By stimulating one part of the brain with laser light, researchers at the National Institutes of Health (NIH) and the Ernest Gallo Clinic and Research Center at UC San Francisco (UCSF) have shown that they ...
Neuroscience
Apr 03, 2013 |
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New stem cell approach for blindness successful in mice (w/ video)
(Medical Xpress)—Blind mice can see again, after Oxford University researchers transplanted developing cells into their eyes and found they could re-form the entire light-sensitive layer of the retina.
Ophthalmology
Jan 08, 2013 |
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Study: Even the smallest stroke can damage brain tissue, impair cognitive function
Blocking a single tiny blood vessel in the brain can harm neural tissue and even alter behavior, a new study from the University of California, San Diego has shown. But these consequences can be mitigated ...
Neuroscience
Dec 16, 2012 |
3.5 / 5 (2) |
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How our sense of touch is a lot like the way we hear
(Medical Xpress)—When you walk into a darkened room, your first instinct is to feel around for a light switch. You slide your hand along the wall, feeling the transition from the doorframe to the painted ...
Neuroscience
Dec 11, 2012 |
5 / 5 (4) |
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Engineering a photo-switch for nerve cells in the eye and brain
(Medical Xpress)—Chemists and vision scientists at the University of Illinois at Chicago have designed a light-sensitive molecule that can stimulate a neural response in cells of the retina and brain—a ...
Medical research
Nov 14, 2012 |
4.8 / 5 (4) |
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AAQ chemical makes blind mice see; compound holds promise for treating humans
A team of University of California, Berkeley, scientists in collaboration with researchers at the University of Munich and University of Washington in Seattle has discovered a chemical that temporarily restores some vision ...
Neuroscience
Jul 25, 2012 |
5 / 5 (2) |
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Scientists identify new molecules important for vision and brain function
In a pair of related studies, scientists from the Florida campus of The Scripps Research Institute have identified several proteins that help regulate cells' response to light—and the development of night blindness, ...
Medical research
Jun 11, 2012 |
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Photoacoustic tomography can 'see' in color and detail several inches beneath the skin
Every new imaging technology has an aura of magic about it because it suddenly reveals what had been concealed, and makes visible what had been invisible. So, too, with photoacoustic tomography, which is allowing ...
Medical research
Mar 22, 2012 |
4.9 / 5 (8) |
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Shining light in the ears may alleviate SAD symptoms
(Medical Xpress) -- Millions of people experience depression and lower levels of energy in the winter due to seasonal-affective disorder (SAD), or the “winter blues.” Since the disorder is thought ...
Medical research
Mar 07, 2012 |
4.9 / 5 (9) |
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Why the eye is better than a camera at capturing contrast and faint detail simultaneously
The human eye long ago solved a problem common to both digital and film cameras: how to get good contrast in an image while also capturing faint detail.
Medical research
May 03, 2011 |
4.7 / 5 (7) |
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Researchers discover mushrooms can provide as much vitamin D as supplements
Researchers from Boston University School of Medicine (BUSM) have discovered that eating mushrooms containing Vitamin D2 can be as effective at increasing and maintaining vitamin D levels (25–hydroxyvitamin D) as taking ...
Health
Apr 22, 2013 |
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Mitochondrial metabolic regulator SIRT4 guards against DNA damage
(Medical Xpress)—Healthy cells don't just happen. As they grow and divide, they need checks and balances to ensure they function properly while adapting to changing conditions around them.
Cancer
Apr 05, 2013 |
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Scientists can see which cells communicate with each other in the brain, by flipping a neural light switch
There are cells in your brain that recognize very specific places, and have that as one of their main jobs. These cells, called place cells, are found in an area behind your temple called the hippocampus. ...
Neuroscience
Apr 04, 2013 |
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Light
Light is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm.) In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.
Three primary properties of light are:
Light, which exists in tiny "packets" called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.
For more information about Light, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
