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Lack of Sleep Can Tremendously Affect How Our Brains Deal with Emotions

Lack of Sleep Can Tremendously Affect How Our Brains Deal with Emotions

Insomnia is a common but highly irritating problem: the Sleep Health Foundation (SHF) estimates that 1 in 3 people will suffer from mild insomnia at one point in their lives. There are a number of causes for this disorder, including hormonal imbalances, bad sleep habits, some medications, too much caffeine and even pregnancy. And whatever the underlying cause, sleepless nights can cause a range of problems, including fatigue and tiredness, difficulty concentrating and focusing, lack of memory, mood or emotional disorders, and the increased chance of committing an error or getting into an accident.

What is even more surprising is that, according to new research, a person’s emotions can be negatively impacted by even missing just one night’s sleep.

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Sleep deprivation led people to lose their neutrality, the ability of the brain to separate the important from the unimportant

This new research was coming out of Tel Aviv University in Israel, where researchers were able to gain a better understanding of the specific effects that sleep deprivation has upon the brain. What they found was that, surprisingly, the negative cognitive effects began after just one night’s sleep.

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Losing Neutrality

    During the study, 18 volunteers stayed up all night one night and got a good night’s sleep on the other. Brain imaging from MRIs and EEG were done throughout the study in order to better understand the brain activity of the participants. After each night, participants were asked to take the same test which involved tracking and identifying the movement of dots across different pictures, which were either emotionally positive, emotionally negative, or emotionally neutral in content. The combination of this test and the brain imaging was enough to get a good idea of the brain’s cognitive processing ability.

    The results showed that lack of sleep negatively impacted the regulatory processing ability of the brain, and the EEG scan revealed little difference in its reaction to positive and negative images. Further testing showed that volunteers were more easily distracted by any kind of image after staying up all night, but that after a good night’s sleep, only the most emotionally charged images registered on the brain.

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    In short, the researchers noted that sleep deprivation led people to lose their neutrality, the ability of the brain to separate the important from the unimportant. See the brain scans and other images taken directly from the study below.

    Losing Neutrality
      Figure 1
      Losing Neutrality
        Figure 2
        Losing Neutrality
          Figure 3

          Before the study, scientists were not certain about just what mechanism in the brain was responsible for emotional impairments which happen when sleep is taken away. Dr. Talma Hadlar, one of the researchers who published this article, noted that:

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          “We assumed that sleep loss would interfere with the processing of emotional images and….executive functions. We were incredibly surprised to find that it significantly impacted the brain in the processing of both neutral and emotionally charged images.”

          The Study in Context

          The Tel Aviv research is part of a recent and growing body of evidence that ties lack of sleep or insomnia to emotional and/or cognitive dysfunction. All three studies below were published just this year:

          • One study, published in the Journal of Integrative Medicine, found in their review that insomnia “poses a major threat to mental health…. Anxiety and depression are the two most negative emotions impacted by insomnia”.
          • An article which appeared in the Journal of Psychosomatic Research found that, for patients suffering from insomnia due to tinnitus (a chronic ringing in the ears), the level of emotional and cognitive distress was directly related to how severe the insomnia was.
          • Research published in the Review of Neurology found that the comorbidity between insomnia and depression is high, and that a vicious cycle begins:

          Anxiety and depression can cause insomnia and the insomnia in turn can make the emotional problems worse.

          In short, those who are suffering from insomnia―even for a very short time―are at an increased risk for emotional and cognitive problems as well. That is why it is important to see a doctor or other healthcare professional about this problem early on to discuss safe and effective remedies for this problem before it gets any worse.

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          Brian Wu

          Health Writer, Author

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          Last Updated on January 13, 2020

          7 Simple Brain Training Habits to Boost Your Brain Power

          7 Simple Brain Training Habits to Boost Your Brain Power

          Throughout the ages, there have been many beliefs in various tricks to boosting brain power, yet when held up to scientific scrutiny, most of these beliefs don’t add up.

          When I was a child, for example, my mother told me if I ate fish it would make me more intelligent. Of course, there’s no scientific proof this is true.

          Today, there is a myriad of games you can download to your phone that claims to improve your brain’s cognitive skills. While we are still waiting for a conclusive scientific verdict on these, recent studies by neuroscientists at Western University in Ontario[1] and researchers from the University of Pennsylvania in Philadelphia appear to contradict these claims.[2]

          So, how can we really boost our brain power? Well, it turns out there are a number of simple things you can do that will improve the function of your brain. Here are seven to get you started.

          1. Do Your Most Difficult Tasks in the Morning

          Our brains work at their best when they are fresh and energized after a good night’s sleep.

          If you have a task to do that requires a lot of thought and focus, the best time to do that task would be first thing in the morning when your brain is at its freshest.

          This is one of the reasons why checking email first thing the morning is not a good idea. You are wasting your brain’s best hours on a simple task that can be done when your brain is not at its freshest

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          Throughout the day, you will find the amount of time you can focus for will fall. Your decision-making abilities will also begin to weaken as the day progresses. This is called “decision fatigue” and that means the decisions you make later in the day will not be as good as the decisions you make earlier in the day.

          It’s far better to do your most difficult, creative tasks early taking advantage of your brain’s higher energy levels.

          Try to avoid meetings first thing in the morning and schedule work that needs higher creative energy and concentration.

          2. Get Enough Breaks

          Our brains are not very good at maintaining concentration and focus for much more than an hour. Once you go beyond a certain amount of time, doing focused work, you will find yourself making more and more mistakes. This is a sign your brain is tired and needs a break.

          Taking the right kind of break is important. Switching from working on a complex spreadsheet to checking your social media feeds is not going to give your brain the right kind of break. Instead, get up from your desk and head outside. If that is not possible, go to the nearest window and look outside.

          Your brain needs a break from the screen, not just the spreadsheet, so leave your phone behind so you are not tempted to look at it and just savour the view.

          3. Read Books, not Social Media Feeds

          There are no shortcuts to improved knowledge and you are certainly not going to improve your general knowledge about anything useful by reading social media feeds. Instead, make reading books a regular habit.

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          When you read good quality books, you increase your ability to use the knowledge you learn to solve problems as your brain will apply the knowledge you learned to existing situations.

          Learn about economic theory, history and psychology. All these topics have real practical applications for us all today.

          4. Exercise Regularly

          Humans did not evolve to be stationary animals. You need to move.

          Had our ancestors spent their days sat around, they would not have survived very long. To survive and find food, our ancestors had to keep moving. Our brains have evolved to function at their best when we are exercised.

          In his book, Brain Rules, Prof.John Medina explains when we exercise, we increase the amount of oxygen in our brains and this helps to sharpen our brain’s functions.

          In studies, when a previously sedentary group of people began a light exercise programme, their cognitive skills improve as well as reaction times and quantitive skills.

          This is why you are more likely to find the solution to a problem when you are walking somewhere or exercising rather than when you are sat at a desk in front of a screen.

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          5. Get Enough of the Right Food

          You probably have experienced the afternoon slump at some point in your life. This is when you feel tired and fatigued in the mid-afternoon. This is a result of the carbohydrates you ate at lunchtime, stimulating your body to produce insulin which then causes a drop in your blood sugar levels.

          When you go into an afternoon slump, concentrating for long periods become almost impossible and you just want to curl up and go to sleep.

          To prevent the afternoon slump, try to eat a protein-rich lunch such as a tuna or chicken salad without pasta, rice or bread. Keep some healthy snacks such as mixed nuts and dried bananas around your workspace and when you feel a little peckish, eat a few of these.

          Not only will you avoid the afternoon slump, but you will also improve your overall general health and feel a lot more energetic.

          6. Drink Enough Water

          Your brain is made up of about 70% water, so without enough water, your brain will not function at its best.

          When you are not drinking enough water, you will find your ability to concentrate, make decisions and stay alert will reduce. You will feel sleepy and lack energy. Your brain functions at its best when it is properly hydrated.

          The solution is to keep a large bottle of water at your work station and sip regularly from it throughout the day. This will increase the number of trips you need to make to the bathroom which is a good thing. It will keep you moving and taking regular breaks from your screen.

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          7. Don’t Deprive Yourself of Sleep

          You probably don’t need a long scientific study to convince you that if you are not getting enough sleep, you are not going to function at your best.

          You just need to go a couple of days without getting enough sleep and you feel your abilities reduce. Your decision-making skills become erratic, your energy levels drop and your ability to stay focused on your work diminishes.

          If you want to improve your brain’s ability to function, then start with getting enough sleep. The number of hours you need will depend on your own circadian rhythms, so find what works best for you.

          Six to eight hours is usually enough for most people so make sure you are hitting that number of hours per night as a minimum.

          The Bottom Line

          Improving our brain power is not difficult. All we need to do is develop a few simple habits such as exercising regularly, getting enough sleep and eating the right foods.

          These seven tips will go a long way to helping you to become more alert, able to focus longer and make decisions. All simple common sense tricks anyone can use.

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          Featured photo credit: Nicole Wolf via unsplash.com

          Reference

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