In a research paper published in PLoS ONE it is reported that it is not just any light that is most effective but rather light of a particular short wavelength (480 nm, i.e. blue light rather than violet or green).
The brain areas that responded to blue light exposures included areas in the brain stem and the thalamus. These areas are involved in the regulation of very basic aspects of brain function, such as the regulation of alertness and sleepiness. Other areas that responded to light included the hippocampus and amygdala. These areas are well known to be involved in the regulation of higher functions such as memory and emotion. In summary, these data establish a brain basis for the wide ranging effects of light on how we perform and feel. The data have implications for the development of better artificial light environments and a better understanding of the effects of light on the human brain in general. Dr Gilles Vandewalle, lead author, comments that “it was impressive to see how only a minor difference in wavelength could have such a dramatically different effect on our fMRI results.”
Dr Pierre Maquet, co-senior author, comments that “as a neurologist I am impressed by the wide ranging effects of light on brain function and the range of brain areas that are affected. This is an area that certainly warrants further investigation.”
Professor Derk-Jan Dijk, co-senior author remarks, “Humans are day-active animals, and maybe it is after all not so surprising to a biologist that blue light has these profound effects on our brain. After all, natural daylight contains quite a bit of blue light. We had simply forgotten about it because we are so preoccupied by the ‘visual’ effects of light, which are not particularly dependent on blue light. We now know that other aspects of brain function are.’
Stuart Miller | alfa
New vaccine production could improve flu shot accuracy
25.07.2017 | Duke University
Chances to treat childhood dementia
24.07.2017 | Julius-Maximilians-Universität Würzburg
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
25.07.2017 | Earth Sciences
25.07.2017 | Life Sciences
25.07.2017 | Life Sciences