She and her husband, Michael, also a computer programmer, eventually installed bright fluorescent lights in their apartment's loft so that Lorna could paint at night and still have an accurate sense of what colors on the canvas would look like during the day. Late one evening Lorna descended to the living room, where computer screens were aglow.
Blue brain technology one evening Lorna descended to the living room, where computer screens were aglow. Now that she had become more attuned to differences in lighting, she noticed just how much the bright light from the computer screens clashed with the soft warmth of the incandescent bulbs that surrounded them.
The tech-savvy couple engineered a crafty solution Blue brain technology minimize the discrepancy. They wrote some code to change the number and wavelength of the photons emitted by their computer screens as a day progressed. At first, they simply intended to harmonize the lighting scheme in their home.
But they soon began to suspect that their new app, dubbed f. They are not the only ones who have appreciated the calming effect. Since the Herfs released the program for free inf.
By following their aesthetic taste, the Herfs had stumbled on a curious twist in the way the body controls how we sleep. Researchers have known for several decades that strong light of any kind can suppress melatonin, the hormone the brain produces at night to induce sleepiness.
But more recent studies show that blue light suppresses melatonin more effectively than any other visible wavelength, potentially leaving people more alert when they would otherwise start feeling drowsy.
As it happens, smartphones, laptops and all kinds of electronic screens have become brighter and bluer over the past couple of decades because of the addition of powerful blue LEDs. The problem is that people are increasingly staring into bright screens long into the night.
Nearly everyone in a survey conducted by the National Sleep Foundation infor example, used a television, computer, cell phone or similar device within an hour of going to bed at least a few nights a week. In the same organization determined that 89 percent of adults and 75 percent of children in the U.
The solutions range from tinted eyeglasses to naturalistic lighting systems for the home and office. Too Much of a Good Thing The light emanating from electronic devices was not always such a hindrance to restful sleep. The current state of affairs can be traced to the invention in Japan of the high-brightness blue LED.
By combining the new blue LEDs with older green and red ones or coating blue LEDs with chemicals that reemit other wavelengths, technology manufacturers could generate full-spectrum white LED light for the first time. Because LEDs are much more energy-efficient than their fluorescent predecessors, they soon became ubiquitous in TVs, computer screens, tablets and certain e-readers, infusing homes and offices with much brighter blue light than ever before.
Researchers did not begin amassing concrete evidence that blue LEDs can disrupt sleep until about 15 years ago, but they have had a good idea of the probable mechanism for quite some time.
Earlier this century biologists uncovered exactly how this signaling process happens.
As it turns out, the missing link was a previously unknown type of light-sensitive cell in the human eye, distinct from the familiar rods and cones that are responsible, respectively, for night and color vision.
This third so-called photoreceptor tracks the amount of blue light in the environment and reports back to the suprachiasmatic nucleus. Thus, when there is a lot of blue light as when the sun is overheadthis particular photoreceptor prompts the suprachiasmatic nucleus to tell the pineal gland not to make much melatonin, and so we stay awake.
When the sun begins to set, however, the amount of blue light diminishes, triggering a surge in melatonin levels, prompting us to fall asleep. In that work, volunteers exposed to an LED-backlit computer for five hours in the evening produced less melatonin, felt less tired, and performed better on tests of attention than those in front of a fluorescent-lit screen of the same size and brightness.
Similarly, for subjects in a study led by Mariana Figueiro of the Rensselaer Polytechnic Institute, interacting with an iPad for just two hours in the evening was enough to prevent the typical nighttime rise of melatonin.
Cajochen and others have also shown that these effects are especially pronounced in teens and adolescents, for reasons that remain unclear. In a New Light Given the accumulating evidence that artificial screens in general and blue lights in particular spoil sleep, scientists have begun investigating various remedies.
Several studies have shown that wearing orange-tinted plastic goggles, which filter out the blue light emanating from electronic devices, helps to prevent melatonin suppression.In the modern age of technology it is not uncommon to come home after a long day at work or school and blow off steam by reading an e-book or watching television.
With massive amounts of computational power, machines can now recognize objects and translate speech in real time. Artificial intelligence is . Brain Power PowerPoint template is a free presentation background that you can download for presentations on data mining, mind mapping and many other different mind caninariojana.com Brain PowerPoint PPT template has a human head and brain with gears over blue background that you can download to make PowerPoint presentations.
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The Blue Brain, a Swiss national brain initiative, aims to create a digital reconstruction of the brain by reverse-engineering mammalian brain circuitry. The mission of the project, founded in May by the Brain and Mind Institute of the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, is to use biologically-detailed digital reconstructions and simulations of the mammalian.
Cover of Superman Red/Superman Blue 1 (Feb ) Art by Dan Jurgens.