What is the percentage of NREM sleep (rounded to the nearest percentage)?

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Prepare for the AASM Sleep Technologist Test. Enhance your knowledge with flashcards and multiple-choice questions, each offering hints and detailed explanations. Get confident for your exam!

Multiple Choice

What is the percentage of NREM sleep (rounded to the nearest percentage)?

Explanation:
NREM sleep dominates the sleep cycle in adults, accounting for the majority of total sleep time. Across a typical night, NREM likely makes up roughly three-quarters to four-fifths of sleep, with REM comprising the remaining portion, usually around 15–25%. If REM is about 16%, then NREM would be about 84%, which falls squarely within the common range and rounds to the nearest whole percent as the best estimate. The other options reflect much smaller shares that would imply REM is disproportionately longer, which isn’t characteristic of normal sleep architecture.

NREM sleep dominates the sleep cycle in adults, accounting for the majority of total sleep time. Across a typical night, NREM likely makes up roughly three-quarters to four-fifths of sleep, with REM comprising the remaining portion, usually around 15–25%. If REM is about 16%, then NREM would be about 84%, which falls squarely within the common range and rounds to the nearest whole percent as the best estimate. The other options reflect much smaller shares that would imply REM is disproportionately longer, which isn’t characteristic of normal sleep architecture.

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