A Color for Better Cognition
Green is another color that research shows can enhance your cognitive abilities. Research in Australia demonstrates that working in a room with green walls or being able to stare out the window at a green landscape can help you stay more alert and concentrate better and longer.2 According to researcher Kate Lee, "We know that green roofs are great for the environment, but now we can say that they boost attention too.” Other sources of green can be beneficial. A study in England revealed that having houseplants in your office and home boosts mood and increases attention span. This study found that the plants increased productivity and enhanced mental focus.3 And there’s another intriguing use of green light that researchers are still investigating: Research at the Harvard Medical School demonstrates that pure-wavelength green light can reduce the pain of migraine headaches and ease photophobia – sensitivity to light in general.4 Photophobia, say the researchers, affects four out of five migraine sufferers. It can be the most disabling of migraine symptoms. The Harvard researchers report that pure green light can reduce migraine headache pain by about 20 percent. Unfortunately, right now the pure green light these researchers used is not available to consumers. But if you are plagued by migraines, it might be worth trying whatever green light you can find – a green light bulb, for instance.Improved Sleep
Meanwhile, researchers at Columbia University have found that letting your eyes take in the right color light in the evening may help you fight off insomnia. Many people have sleeping problems because they use devices in the evening like smartphones, tablets and computers that give off a lot of light from the blue end of the spectrum. The blue light disrupts the release of hormones like melatonin that help us sleep. But the scientists found that wearing amber lenses after dinner – which absorb blue light waves and block them from entering the eyes – can offset this insomnia-inducing effect. In tests of glasses with amber lenses, the researchers found they helped people sleep an average of 30 more minutes per night.5 In investigating these studies of color, I was surprised to find so many strong influences on brain function, pain and sleep. But now I know why I like having my work desk face a window that looks out on an open expanse of green grass and trees.- http://science.sciencemag.org/content/323/5918/1226?sid=12a960df-d594-4afe-8ae0-382ad3defdbd
- http://www.sciencedirect.com/science/article/pii/S0272494415000328
- http://www.ncbi.nlm.nih.gov/pubmed/?term=Marlon+Nieuwenhuis
- https://www.ncbi.nlm.nih.gov/pubmed/27190022
- https://www.ncbi.nlm.nih.gov/pubmed/29101797