nonrapid eye movement
Học thuậtThân thiện
Definition
Noun A recurring sleep state characterized by the absence of rapid eye movements and, typically, the absence of dreaming. This state constitutes the majority of a normal sleep cycle.
Usage
This is a technical term used primarily in the fields of sleep science, medicine, and psychology to describe a specific phase of sleep. It is often abbreviated as NREM.
Examples
- Noun:
- The first part of the night is dominated by nonrapid eye movement sleep.
- During nonrapid eye movement, brain waves are slower compared to REM sleep.
- The study focused on the restorative functions of nonrapid eye movement.
Advanced Usage
- Stages of NREM: Nonrapid eye movement sleep is itself divided into three distinct stages (N1, N2, N3), progressing from light to deep sleep.
- The transition from stage N2 to stage N3 nonrapid eye movement sleep is marked by the appearance of delta waves.
Variants and Related Words
- NREM (noun): The standard abbreviation for "nonrapid eye movement."
- NREM sleep is also known as quiet sleep.
- non-REM (adjective/noun): An alternative hyphenated spelling with the same meaning.
- The non-REM phases are crucial for physical recovery.
Synonyms
- quiet sleep (noun): A descriptive synonym emphasizing the lack of physiological activity seen in REM sleep.
- slow-wave sleep (noun): Specifically refers to the deepest stage (N3) of nonrapid eye movement sleep, characterized by slow brain waves. This is a more specific term.
Antonyms
- rapid eye movement (noun): The sleep state characterized by rapid eye movements and vivid dreaming, often contrasted directly with nonrapid eye movement.
- REM sleep (noun): The common abbreviation for the antonymous sleep state.
- paradoxical sleep (noun): Another term for REM sleep, highlighting its contrasting properties to NREM.
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