nonrapid eye movement sleep
Học thuậtThân thiện
Definition
Noun: A stage of sleep characterized by the absence of rapid eye movements and, typically, the absence of dreaming. It constitutes the majority of a normal sleep cycle and includes several substages progressing from light to deep sleep.
Usage
This term is used in scientific, medical, and psychological contexts to describe a specific physiological state within the sleep cycle. It is often abbreviated as NREM sleep.
Examples
- Noun:
- Most of the night is spent in nonrapid eye movement sleep, which is essential for physical restoration.
- The study compared brain wave patterns during nonrapid eye movement sleep and REM sleep.
- Disorders affecting nonrapid eye movement sleep can lead to feelings of unrefreshing rest.
Advanced Usage
- "slow-wave sleep (SWS)": This is a specific, deep stage within nonrapid eye movement sleep, also known as NREM Stage 3.
- The most restorative phase of nonrapid eye movement sleep is slow-wave sleep.
Variants and Related Words
- NREM sleep (n): The standard abbreviation for nonrapid eye movement sleep.
- The sleep cycle alternates between NREM and REM stages.
- Quiet sleep: An alternative term sometimes used, particularly in developmental psychology.
- Orthodox sleep: A less common synonym used in some scientific literature.
Synonyms
- Slow-wave sleep (specifically for its deepest stage)
- Quiet sleep
- Synchronized sleep (referring to the synchronized brain wave patterns)
Antonyms
- REM sleep (n): Rapid eye movement sleep, the stage associated with dreaming and brain activity similar to wakefulness.
- Dreaming is most vivid during REM sleep, not during nonrapid eye movement sleep.
- Paradoxical sleep: Another term for REM sleep.
Noun
- a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time