With the launch of “Night Mode” in today's main devices, the importance of a filter that leaves the display with warmer and/or less blue colors has been raised. Why do I need a feature like this on my computer, smartphone or tablet? Does the feature really help me sleep or make reading more comfortable? In practice, as the F.lux app explains, during the day, device screens are comfortable to look at. That's because they are made to look like the sun. But at 9pm, 10pm or 3am, you probably shouldn't be looking at the sun.
So, as the sun sets, it's a good idea to use the computer less or make it emit lights that are more comfortable for your eyes. This is why many doctors recommend that you avoid the computer and other electronics for at least an hour before bed. When you see lightsmore comfortable”, the problem is remedied. You may already know the three primary colors that make up the pixels of most displays out there: green, blue and red. Despite being emitted together, they are not absorbed by our cornea (and subsequently, the brain) in the same way. So be careful!
The different shades of color are absorbed by various types of photoreceptors, cells that capture the light that reaches the retina and transmit nerve impulses over these lights to the brain. Blue light, in particular, is absorbed by a photopigment called melanopsin, found in a photoreceptor in the retina. Only the melanopsin, when sensitized by blue light, sends a message to the brain to stop producing melatonin, the hormone that controls sleep. It's a natural process: with the amount of blue light received during the day, our body knows that it's not time to sleep yet.
However, as the sun sets, the body begins to produce melatonin to indicate that it is time to sleep. So you can already imagine what the combination of cell phone and bed does: due to the high amount of blue light on the screen of your smartphone or computer, much greater than that of incandescent light, your brain understands that bedtime has not yet arrived, although the circadian rhythm tries to say otherwise.
And it's always good to sleep properly. The doctor Dan Siegel, from the UCLA School of Medicine in California, told Business Insider that if you sleep less than seven to nine hours a day, your glial cells don't properly clean out the toxins generated by your neurons. This directly influences the productivity, as your attention, memory and ability to solve problems are weakened. Dan Siegel also says that even insulin, which helps regulate metabolism, does not work properly. Without insulin working properly, you are more susceptible to gaining weight because you tend to eat more unnecessarily.
And you, what do you think of this feature on your gadget?
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