Question
In a healthy young adult, what proportion of sleep time is comprised of Rapid Eye Movement (REM) sleep?
| A. |
5-10% |
| B. |
20-25% |
| C. |
45-50% |
| D. |
70-75% |
Show Answer
|
Correct Answer � B Explanation |
 |
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REM Sleep Overview:
- REM sleep is a phase of sleep associated with vivid dreaming and brain activity resembling wakefulness.
- It is essential for memory consolidation and emotional regulation.
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Sleep Cycle:
- The average sleep cycle consists of Non-REM (NREM) and REM sleep.
- REM sleep constitutes 20-25% of total sleep in healthy young adults.
-
Sleep Phases:
- NREM sleep (stages N1, N2, N3) makes up the majority (~75-80%) of total sleep time.