We touched on this news in News on the previous marginAnd here we deal with it in some detail, you know that blue light can have a negative effect on your sleep, according to studies conducted over the past ten years by Harvard Medical University, University of Toronto and others, these studies were the reason that led Apple to introduce Night Shift mode since Several years starting with iOS 9.3, then it was adopted by many Android devices. As the name suggests, the goal of the Night Shift mode, or night shift, or night mode, whatever the name, was to change the color of the iPhone screen and make it warmer, and reduce the amount of blue light that negatively affects sleep in one way or another.


Can Night Shift Mode help?

Contrary to claims about blue light exposure that were made in the original studies, which relied mostly on measuring levels of melatonin and other biomedical agents, BYU decided to take a more practical approach, not just theoretical, to measure how well people sleep after using Their smartphones.

As the researchers of this university pointed out, the claims made by teams at Harvard and elsewhere were largely theoretical, so they decided it was time to test the theory in action by running an actual experiment.


So, Professor of Psychology at Brigham Young University, Chad Jensen, joined researchers from Children's Hospital Medical Center in Cincinnati "a large city in the US state of Ohio" to compare individuals' sleep outcomes not only in two categories, but in three different categories:

◉ People who use their phones at night with Night Shift function ON.

◉ People who used their phones at night without Night Shift.

◉ People who have never used a smartphone before bed.

The study consisted of 167 individuals between the ages of 18 and 24 who used cell phones daily, and the results were surprising, as they showed that Night Shift was largely unrelated to the topic of the effect on sleep.

In all, there were no differences between the three groups. There was no difference between activating Night Shift on the phone, not activating it, or even not using the phone at all.


For the study, participants were asked to spend at least eight hours in bed each night, and wear an accelerometer on their wrist to record their sleep activity. People who are assigned to a smartphone also have an app installed that monitors their usage patterns.

The researchers not only measured total sleep duration, but also sleep quality, time taken to fall asleep, and when participants woke up.

With the results not showing any measurable differences between smartphone and non-smart phone users, the team decided to conduct a follow-up experiment, dividing the participants into two separate groups, one with an average of seven hours of sleep per night, and the other sleeping less, that is, only six hours.

In this second round, there was a slight difference between the group members who got seven hours of sleep, with those who did not use a smartphone before bed at all got better sleep than those who used a smartphone. Nor did Night Shift make any difference, as using the phone before bed caused them to sleep less.

Likewise, the six-hour group did not show any differences at all, a finding that Jensen explained as indicating that "when you are very tired, you fall asleep no matter what you do right before bed."

While there is plenty of evidence indicating that blue light increases alertness and makes sleep more difficult, it is important to consider other stimuli such as cognitive and psychological stimuli.

Jensen also suggests that some of the evidence that was previously used to conclude that blue light causes sleep problems may have erred in other aspects of smartphone use before bed that went beyond blue light, especially since most of these studies were conducted before the invention of the "Night Shift" feature.

In other words, researchers in early studies may have confused the effects of blue light, which certainly has a measurable biological effect on the body, with the natural cognitive effort of using a smartphone before bed, rather than engaging in a quieter period with fewer stimuli before bed. To understand this point, continue with the next paragraph.


Focusing on the last point, which is the consideration of turning on Night Shift mode with some other stimuli, such as paying attention to what you see on the phone screen, and how the content attracts you to follow it, and if you spend some time on it, the feature may already be working and you do not feel its presence at all, so we think that it will not be There is a little effect, and you will fall asleep only if your attention to the content that you follow diminishes, and with your body already in a resting position in addition to the stillness of the night around you, add to that the effort and fatigue that you spent throughout your day, only then will you fall asleep inevitably, and the phone may fall On your face and you did not know if you fell asleep, it happened to me personally so I was carrying an iPhone 4 “all in metal and heavy” so I fell asleep and fell on my nose and it was a tough night, and Night Shift was not invented yet, and now with the presence of the iPhone 12 and using the feature I still sleep and I also use it before bed and he falls beside me, I became careful this time, and I only see him when I wake up again. The situation hasn't changed for me at least, I just use it for eye relief anyway, and it might make a difference for other people. You will sleep if nothing catches your attention, otherwise you will sleep against your will.

Have you noticed an effect between the presence or absence of Night Shift on sleep, etc.? Let us know in the comments.

Source:

idropnews

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