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Latest Opsin Stories

2011-10-10 09:20:25

New York University biologists have identified a new mechanism for regulating color vision by studying a mutant fly named after Frank ('Ol Blue Eyes) Sinatra. Their findings, which appear in the journal Nature, focus on how the visual system functions in order to preserve the fidelity of color discrimination throughout the life of an organism. They also offer new insights into how genes controlling color detection are turned on and off. Many biologists study how different cells develop to...

2011-08-11 01:00:00

HELSINKI and BERGEN, Norway, August 11, 2011 /PRNewswire/ -- Valkee (http://valkee.com), inventor of the world's first bright-light headset, and scientists from the University of Oulu will present new findings on human brain's photosensitivity at the Scandinavian Physiology Society Annual Meeting 2011, August 12-14. Their research localized the OPN3 protein - known as the light-sensitive photoreceptor protein - in all of the 18 evaluated areas of the brain. These brain...

2011-07-20 17:17:53

'4-eyed fish' shows how gene expression enables adaptation A "four-eyed" fish that sees simultaneously above and below the water line has offered up a dramatic example of how gene expression allows organisms to adapt to their environment. Gregory L. Owens, a University of British Columbia graduate student, found a sharp divide between the upper and lower sections of the eyes of Anableps anableps, a six- to 12-inch fish closely related to guppies. The findings were published today online in...

2011-07-20 14:37:08

Researchers influence activity of nerve cells with laser light Unlike conventional methods, with the so-called optogenetics, the researchers are able to target one cell type. "We are now going to use this method to find out exactly what goes wrong in the nerve cells in movement disorders such as ataxias", said Prof. Dr. Stefan Herlitze (RUB Department for Biology and Biotechnology). The researchers report in the Journal of Biological Chemistry. The Bochum team examined a specific signaling...

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2011-07-01 10:10:00

Many animals have eyes that are incredibly complex "“ others manage without. Researchers at the University of Gothenburg have shown that sea urchins see with their entire body despite having no eyes at all. The study has been published in the scientific journal Proceedings of the National Academy of Sciences (PNAS). Most animals react to light and have developed a very sophisticated way of seeing complex images so that they can function in their surroundings. Good examples include...

2011-06-09 23:50:49

Johns Hopkins researchers uncover the source of the visual system's 'false alarms' On rare occasion, the light-sensing photoreceptor cells in the eye misfire and signal to the brain as if they have captured photons, when in reality they haven't. For years this phenomenon remained a mystery. Reporting in the June 10 issue of Science, neuroscientists at the Johns Hopkins University School of Medicine have discovered that a light-capturing pigment molecule in photoreceptors can be triggered by...

2011-06-09 23:25:37

Biologists have uncovered a key regulatory mechanism used for gene expression in the visual system. Their findings, which appear in the latest issue of the journal Cell, offer new insights into the complexity behind the genetic make-up of biological systems. The study, which included researchers from New York University's Department of Biology, Japan's Okayama University, Cincinnati Children's Hospital, and Germany's University of Wrzburg, examined the photoreceptor cells in the retina of the...

2011-04-04 08:05:21

(Ivanhoe Newswire) "“ Turns out our sensitivity to seeing in color is not only due to cone cells in the retina, but also through the thyroid gland by controlling which visual pigment is produced in the cones. Research conducted on mice and rats has revealed that the production of visual pigment present in mature cones is regulated by the thyroid hormone. The team of researchers at the Max Planck Institute for Brain Research in Frankfurt/M., along with colleagues at the University of...

2011-03-11 15:40:41

New research from Mount Sinai School of Medicine has discovered that rhodopsin, a pigment of the retina that is responsible for the first events in the perception of light, may also be involved in temperature sensation. This detection had not been revealed in previous studies. The work emerged from a collaboration between the laboratory of Andrew Chess, M.D., Professor in the Departments of Neuroscience, Developmental and Regenerative Biology and Genetics and Genomic Sciences at Mount Sinai,...

2011-03-10 23:26:21

A light-sensing receptor that's packed inside the eye's photoreceptor cells has an altogether surprising role in cells elsewhere in the body, Johns Hopkins scientists have discovered. Using fruit flies, they showed that this protein, called rhodopsin, also is critical for sensing temperature. A report on the work appears March 11 in Science. "For decades, this well-known molecule "” one of the most-studied sensory receptors "” was thought to function exclusively in the eye as a...


Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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