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About this document
- Pages
- 2 pages
- Price
- $2 one-time, yours to keep
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- Included in every plan
- Format
- Subject
- Biopsychology, Psychology
- Module
- Week 6 · Week 6
This document covers the stages of sleep, the differences between REM and NREM sleep, and the theories of sleep. It is useful for students studying sleep and dreaming in Week 6 of the Psy 240 course.
What's inside
- Sleep stages and their characteristics
- REM sleep and dreaming
- Theories of sleep
- Sleep walking and sleep talking
- Electrophysiological measures of sleep
Who it is for: Students taking the Psy 240 course, Week 6. (Undergraduate)
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Summary
Sleep is a natural state of reduced consciousness and activity that is essential for health. Students learn about the stages of sleep and what happens during them.
Sleep and its stages
Sleep is defined by reduced consciousness and activity. There are four stages of sleep, each with different brain activity. Sleep cycles through these stages about every 90 minutes.
REM sleep and dreaming
Dreaming happens during REM sleep. Some people think external things affect dreams. Sleepwalking and sleep talking do not only happen during dreaming.
Theories of sleep
Two main theories explain why we sleep. The recuperation theory says sleep restores the body's balance. The circadian theory says sleep is programmed into the body's daily cycle.
Personal reflection on sleep
The writer reflects on their own experience of sleep and how it makes them feel. They agree with the recuperation theory of sleep.
Key terms
- Electroencephalogram
- A measure of brain activity during sleep.
- Electrooculogram
- A measure of eye movement during sleep.
- Neck electromyogram
- A measure of muscle activity in the neck during sleep.
- Slow-wave sleep
- The deep sleep stages 3 and 4, with delta waves.
- Circadian theory
- The idea that sleep is programmed into the body's daily cycle.
- Recuperation theory
- The idea that sleep restores the body's balance after being awake.
Questions this document helps with
- What are the stages of sleep?
- What happens during REM sleep?
- How do theories explain why we sleep?
Summary written with AI from the document's text.
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