While this is occurring, your body slows down in preparation for NREM stage 3 sleep and REM sleep—the deep sleep stages when the brain and body repair, restore, and reset for the coming day.1 NREM Stage 3 Deep, slow brain waves known as delta waves begin to emerge during NREM stage 3...
4 and REM (rapid eye movement). Stage 1 Stage 1 sleep is light sleep. You experience a drifting in and out of sleep. You can be easily woken up. Your eye movement and body movements slow down. You may experience sudden jerky movement of your legs or other muscles. These a...
your brain is still working hard. As you sleep, your brain cycles through 4 stages of sleep: Stage 1 (N1), Stage 2 (N2), Stage 3 (N3), and Stage 4 (REM Sleep). These stages fall within two larger phases of sleep, known as Non-REM and REM. ...
Additionally, non-REM sleep can be subdivided into 4 sub-stages, distinguishable by levels of EEG (a measurement for the bioelectric activity of the brain) visible duringpolysomnographic recordings. Each successive stage of non-REM sleep is indicative of a deeper sleep, with stage 1 as the l...
The majority of your dreams happen in this stage. These stages repeat themselves throughout a night’s sleep. [1] Dreams can happen in ___. A. Stage 1 and 2 B. Stage 3 and 4 C. every stage 相关知识点: 试题来源: 解析 [答案]C [答案]B [答案]A [解析]本文第一句提到梦可能会...
Stage 1 (N1) is the first of the sleep cycles stages. Stage 1 occurs during the Non-REM sleep phase. During Stage 1, you alternate between being awake and asleep. Therefore, Stage 1 is considered a light sleep, and you can awaken easily. This stage is very short, lasting roughly 10 ...
We used to identify five stages of sleep (as above) but recently Stages 3 and 4 have been grouped together for their similarities. Let's take a closer look at those four stages: NREM Stage 1is a light sleep from which you are easily woken. You begin to lose muscle tone, causing twitc...
Light sleep actually occurs in two stages: NREM stages 1 and 2 sleep. Think of NREM stage 1 as “falling asleep.” During this time, your muscles relax, your heart begins to slow down, and your body temperature dips. Your brain wavesslow down, moving from a regular, rhythmic pattern to...
根据“Since Stage Two is a deeper sleep than Stage One, it will take more arousal to awaken a person from this stage of sleep.”(由于第二阶段比第一阶段睡眠更深,因此需要更多的唤醒才能将人从这一睡眠阶段唤醒。)可知第一阶段的睡眠比第二阶段的睡眠要轻。故选B。 (3)题详解: 细节理解题。
1. Light Sleep (NREM Stage 1) The journey into dreamland begins with light sleep, known as NREM (Non-Rapid Eye Movement) Stage 1. During this stage, you’re in a state of transition between wakefulness and sleep. Your muscles start to relax, and your brain produces alpha and theta waves...