![]() ![]() ![]() In fact, it is the retina’s cone cells that determine colour. Because melanopsin was better at detecting short-wavelength photons, he says, it was thought it was biased in favour of blue light. “The melanopsin system is fundamentally there to detect brightness,” says Brown. It started about 20 years ago with the discovery of the role that melanopsin – a light-sensitive protein found in the eye – plays in regulating the body clock. So, where did the idea of limiting blue light from screens originate? “There was definitely a valid scientific idea about why those things would work,” says Brown. All things being equal, warm yellow light is worse. ![]() The research, carried out on mice, appears to rubbish the notion that blue light disrupts sleep. It is supposed to help you sleep better.įindings in a study led by Dr Tim Brown and published in Current Biology suggest this is the very opposite of correct. At some point while you are lying in bed at night sending texts, your screen may politely suggest you activate a function that shifts the colours of your screen from the colder to the warmer end of the spectrum. ‘N ight mode” is one of those features you may be aware of only because your phone keeps telling you about it. ![]()
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