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Sleep Tight!

2020.10.19
  • BBP Staff
  • Others|Hobbies_LeisureActivities|LearningTechniques
  • Intermediate
  • 2020

Do you have a good sleeping habit? How many hours do you sleep every night?

A lot of people may think academic studies, jobs, and relationships are often more important than sleep. However, you shouldn’t take sleep lightly. Sleep actually has a very important role for both human bodies and minds, and even for learning. Let’s have a closer look.


First, as for bodies, lack of sleep can cause daytime drowsiness and low energy. It hurts the body’s ability to stay healthy because the immune system can be impaired by poor sleep quality. The immune system goes to work recharging itself and fighting infection while you’re in the deepest levels of sleep. If sleep time is cut short, the immune system doesn’t get the time it needs to stay healthy.


Second, lack of sleep can also affect your mood significantly. It causes irritability and anger, and you may find it difficult to cope with stress. Chronic sleepiness can put you at greater risk for depression. Depression is closely linked to sleep deprivation.


Third, sleep also plays a significant role for memory and learning. Let’s see some effects of sleep on memory and learning. Sleep has been considered very important for memory and learning, but until recently, there was no proof. A research team at Rutgers University recently discovered a type of brain activity that happens during sleep. The activity is important for memory and learning as it transfers new information from the hippocampus to the neocortex. The hippocampus is a part of the brain which plays a key role in memory and how knowledge is obtained. The neocortex stores long-term memories. As for long-term memories, it’s a type of memory which relates to memory and learning. The biggest categories of memory are “short-term memory (or working memory)” and “long-term memory,” based on the amount of time the memory is stored. As you would imagine, long-term memories are much more complex than short-term ones. We store different types of information such as procedures, life experiences and language, with separate memory systems.


Back to the study at Rutgers University, the team showed how we create long-term memories. The wave activity transfers short-term memories from the hippocampus to the neocortex. Then the neocortex turns the sharp wave ripples into long-term memories. Sleep encourages this brain activity. Therefore, the new information doesn’t have a chance to leave the hippocampus and go to the neocortex if sleep is deprived. In other words, short sleep has negative effects on memory and learning. According to current research, most undergraduates need 8.5 to 9.25 hours of sleep, and most adults, 7 to 9 hours. So, university students need to sleep for at least 8 hours if they want a healthier body and mind, and greater chances for academic success!

 


Photo Credit: Andrea Piacquadio @pexels.com



Blog Quiz

 

Read the following sentences. Choose T(true) or F(false).


1. Sleep has an import role in learning.

2. A type of brain activity that is important for memory and learning happens during sleep.

3. Most university students need 6 to 7 hours of sleep.




Scroll down for the answers to the quiz.











Quiz Answers

1. T

2. T

3. F

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