The Science of Human Sleep
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Lessons4 lessons
Media
1 · What Is Sleep and Wakefulness
Quiz
Final assessmentAfter the last lesson, for your diploma
About
“The Science of Human Sleep” is a 4-lesson course at Teen level, created with soclever, a personal AI teacher. Each lesson takes a few minutes and ends with a check-in question; finish the curriculum and you can take a certificate test to earn a diploma. Try the first lesson without an account — or make your own course on any topic.
What you'll learn
- What Is Sleep and Wakefulness. Your brain is either awake or asleep, but those aren't just on/off states—they're two totally different modes of operation.
- Your Body's 24-Hour Sleep Clock. Your body runs on a built-in 24-hour timer called a circadian rhythm. This is a biological clock that tells you when to sleep and when to stay awake.
Questions this course answers
What controls the shift between wakefulness and sleep?
Deep brain areas, specifically the hypothalamus and brain stem, work like a switch to control the shift between wakefulness and sleep.
What does adenosine do while you are awake?
Adenosine is a brain chemical that keeps rising the longer you are awake and helps flip the switch for sleep as it builds up.
How long does a full sleep cycle take?
The whole sleep cycle takes roughly 90 minutes, often between 70 and 120 minutes, and repeats several times throughout the night.
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