Blue LEDs

Written by IT News on 10:00 PM

By: Gabriel Gache, Science News Editor

Or, at least, is what the United States, researchers say. At night, drivers often lose their vigilance because of fatigue, but the blue lights or blue light-emitting diodes, are believed to have brain stupid to trust that in the morning, when in fact it is the middle of the night, thus reset the natural body clock. Recent studies have shown that up to 30 percent of the accidents attracting large trucks, half of them occur in the first few hours because of fatigue.

The concept of using light to improve alertness is well established. Translating thoughtful that, in realistic application is the next challenge, said Mariana Figueiro, co-author of the study and Rensselaer Polytechnic Institute researcher. Figueiro provides a source of lighting built into the truck cab, which shines blue light; drivers will be considered "light soul" as long as 30 minutes before continuing his journey.

Rensselaer Polytechnic Institute, the study was as light and blue light, in particular, affect alertness and sleep-deprived not sleep-deprived subjects, in the hope that the accident rates in the second half of the day could be reduced with the use of light stimulants built in vehicles. Figueiro argues that only after 45 minutes of basking in a blue light, drivers should feel more clearly the impact of brain activity in 300 milliseconds response increases, thus increasing vigilance.

The experiments were conducted at Rensselaer used in the 470 - nanometer light source, with 40 suites in the world. On the other hand, 450 and 470 - nanometer wavelength, given the intensity of 2.5, 5 and 7.5 lux, were tested in order to determine how best to enhance the reflexes of the driver. On the other hand, while the blue LEDs can be increased vigilance of the driver and other wavelengths can help reduce the vigilance of people, such as Alzheimer's disease patients, helping them to sleep at night.

No wonder that some of the car manufacturers already included in the mass production system to keep drivers more alert. A sensor system monitors various actions, such as eye movement or steering movements to determine whether or not to warn the driver if not, the control system automatically alerts the driver. Warning that he is a fatigued is one thing, but keeping it from becoming drowsy is the main priority in the study.

Director Sleep Research Centre at Loughborough University, Jim Horn, said that it might even be the possibility of changing the natural body clocks for short periods of time: "The transfer it to eight hours is not less than 10 days and very few people are able to do so”.