Within the color light matter, as has been seen Steven Lockley, a neuroscientist at Harvard Medical School. In 2003 I wanted to find out what happened when a group of subjects to blue light was exposed for 6.5 hours, compared with others who spent the same time in an environment with green light and blue light was suppressed melatonin synthesis - sleep-hormone up to twice the green. These are some of its effects.Insomnia. If you normally start to close their eyes at 11 pm, to remain exposed to blue light can make it impossible for us to sleep until after 2 am, as demonstrated in an experiment Steven Lockley.
Raises the temperature and improves memory. According to investigations by the researcher at the University of Montreal Gilles Vandewalle, blue light increases heart rate and raises the temperature. And using electroencephalograms observed that when a person is exposed to the light tonality while performing memory tasks, the response in areas of the frontal and parietal cortex of the brain improved.
Good in the "cole" and in hospitals. According to the German chronobiologist Dieter Kunz, increasing the amount of blue in artificial light we could increase performance and learning ability both in schools and in offices and other workplaces in confined spaces. Even improve the health of patients in hospitals. Similarly,? Reducing exposure to blue light at night to protect shift workers from diseases such as cancer or cardiovascular problems, and reduce insomnia in the population ?, says Kunz.
Anti jet lag. Blue light therapy could be used to set the time or restart the internal clock of people who, after a trip that crosses several time zones or time zones suffer jet lag. The same could apply to students who stay up late, astronauts in orbit on the ISS ...
To drive. A recent study by the University of Bordeaux and the French CNRS been shown to counteract the drowsiness problems that appear when driving at night is sufficient to expose the wheel who runs a monochromatic blue light. Thus failures are reduced by half, about the same as taking 400 mg of coffee, according to the experiments revealed.
Sensitive by sundown. We are so sensitive to blue light has to do with a photopigment called melanopsin that is particularly sensitive to this wavelength. This molecule present in the photosensitive ganglion cells in the retina of the human eye. According to Russell Foster, one possible explanation is that these cells are configured to detect light of dominant wavelength at dusk. "In the twilight, the sun is near the horizon and there is a relative enrichment of blue light in the dome of the sky because the particles in the atmosphere makes low light waves disperse more than the rest," describes Foster.