They have also identified the neurological mechanism for how our internal clock can measure changes in the light color that includes dawn and dusk.
The research is carried out at University of Manchester.
Researchers said that there are changes in the light intensity during the sunrise and sunset and also during twilight as the light is bluer than during the day
The study is performed on mice.
Researchers have subjected the mice to different visual stimuli and recorded that electrical activity from the brain clock and they found that the neurons are more sensitive to changes in the color between blue and yellow than to the changes in brightness.
The researches have measured the changes in the color and brightness at the top of the University’s Pariser Building for more than a month; this data was used to create a simulation for an artificial sky
They found that same as it is expected for nocturnal animals, when mice was placed under the artificial sky for several days, the highest body temperatures was recorded just after the dusk, when the sky turned blue, indicating that their body clock was working optimally.
If the researchers only change the brightness of the sky and not the color it was found the body clock was not working properly as the mice was seen more active before dusk.
“This is the first time that we’ve been able to test the theory that color affects our body clock in any mammal. It has always been very hard to separate the change in color to the change in brightness but using new experimental tools and a psychophysics approach we were successful,” said Dr Timothy Brown from the Faculty of Life Sciences, who led the study.
He added, “What’s exciting about our research is that the same findings can be applied to humans. So, in theory, color could be used to manipulate our clock, which could be useful for shift workers or travelers wanting to minimize jet lag.”