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nerve cells News
Laser Scanning Lends Credence to Theory of Brain Circuitry
MONTREAL, May 30, 2014 — Nerve cells in the brain can rewire and fine-tune themselves by forming connections with neighboring cells. Researchers from Montreal Neurological Institute at McGill University and the McGill University Health Center have demonstrated exactly how this happens using timed visual stimulation and multi-photon laser-scanning microscopy. This is the first time that such evidence has been observed in real time, researchers said. They said the findings support the Hebbian model of nerve
Photoswitch Affects Nerve Cells in Eye, Brain
CHICAGO, Nov. 16, 2012 — Light-sensitive molecules that stimulate a neural response in the cells of the retina and brain could be the first step toward overcoming degenerative eye diseases or quieting epileptic seizures.
Camera vs. Eye: Why the Eyes Have It
BERKELEY, Calif., May 5, 2011 — The human eye long ago solved a problem common to both digital and film cameras: how to get good contrast in an image while capturing faint detail. Physiologists described the retina’s tricks for improving contrast and sharpening edges decades...
Nerve Cells Controlled via Light Pulses
FRANKFURT, Germany, April 11, 2011 — Using channelrhodopsins — ultralight-sensitive membrane proteins that can be inserted into cell membranes — researchers now can precisely control nerve cell activity with weak light pulses. Because channelrhodopsin has a slightly...
IR Laser Pulses ID Regenerative Drugs
CAMBRIDGE, Mass., Oct., 12, 2010 — Using a new laser surgery technique, MIT engineers have successfully delivered drugs that regenerate nerve cells in living animals. Scientists have long sought the ability to regenerate nerve cells, or neurons, which could offer a new way to treat...
Realistic Robotic Arm Within Reach
DALLAS, Sept. 15, 2010 — Lightning-fast fiber optic connections between robotic limbs and the human brain may be within reach for injured soldiers and other amputees with the establishment of a multimillion-dollar neurophotonics research center dedicated to creating...
An Optogenetic Guide to the Brain
WAKO, Japan, July 20, 2010 — Scientists at RIKEN have developed a genetically encoded fluorescent sensor that can act as a direct optical indicator of signaling activity in the living brain. This powerful tool, described in a new article from Nature Methods, promises to help...
Light offers read-and-write access to brain cells
OXFORD, UK – A new set of methods allows experimental interaction with biological systems composed of many interacting cell types, such as neural circuits in the brain. Researchers at the University of Oxford have used light to manipulate the memories of fruit...
Lasers Twist Fly Memories
OXFORD, England, Oct. 19, 2009 -- Light has been used to manipulate the memories of fruit flies, allowing them to learn from mistakes they never made and scientists to pinpoint the nerve cells that regulate such actions. The work could provide valuable information about how memories...
Photovoltaic Nanoparticle Eyed for Artificial Retina
GALVESTON, Texas, Feb. 28, 2007 -- The first direct electrical link between nerve cells and photovoltaic nanoparticle films has been achieved, a development that could lead to the use of nanoparticles in a wide variety of light-stimulated nerve-signaling devices, such as an...
Imaging Method Records Nerve Cell Signals
Mar 5, 2004 — ITHACA, N.Y., March 5 -- Combining the bright laser light of multiphoton microscopy with specially developed dyes and a phenomenon called second-harmonic generation, biophysicists have made high-resolution images of millisecond-by-millisecond...
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May 2024
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