NREM Sleep is the abbreviations of Non-rapid eye movement sleep which is a type of sleep that is divided into four stages. Usually about 75\% of the night is spent in NREM Sleep. Non
-REM sleep lasts about four to six hours.
The four (4) stages of Non-rapid eye movement sleep are:
1) In stage one of the sleep cycle brain waves are referred to as theta waves. They consist of a 4-7 cycle per second rhythm.
2) In stage 2 of sleep, the brain generates sleep spindles. Spindles are a 12-14 rhythm that lasts a half of a second. Sleep talking usually occurs during stages 1 and 2 of sleep. Sleep talking is mumbled and usually not understandable.
3) Delta waves are produced from the brain in the third stage of sleep. These brain waves become slower when the sleep cycle begins. During this cycle your heart rate, blood pressure, and arousal decline.
4) Stage four is very similar to stage 3 because Delta waves continue in the brain. During this stage of sleep most dreams and nightmares occur.
Related Articles | |
Non-REM sleep at psychology-glossary.com | ■■■■■■■■■■ |
Non-REM sleep (NonREM sleep or just NREM) which is another name for Non-rapid eye movement sleep refers . . . Read More | |
NREM sleep (Non–rapid eye Movement sleep) at psychology-glossary.com | ■■■■■■ |
NREM sleep (Non–rapid eye Movement sleep): NREM sleep (Non–rapid eye Movement sleep ) includes sleep . . . Read More | |
Theta waves at psychology-glossary.com | ■■■■ |
Theta waves refer to brain waves with a frequency of 4-7 cycles per second that are produced during light . . . Read More | |
Obstructive sleep Apnea at psychology-glossary.com | ■■■■ |
Obstructive sleep Apnea refers to Apnea that occurs most often during rapid eye movement (REM) sleep . . . Read More | |
Non-REM dreams at psychology-glossary.com | ■■■■ |
Non-REM dreams refer to dreams that are more likely to consist of brief, fragmentary impressions that . . . Read More | |
Night terror at psychology-glossary.com | ■■■ |
Night terror is defined as a state of panic during NREM sleep. An experience of intense anxiety during . . . Read More | |
ALS at psychology-glossary.com | ■■■ |
ALS is the abbreviations of Amyotrophic lateral sclerosis which refers to the disease of the Motor System . . . Read More | |
Hertz (Hz) at psychology-glossary.com | ■■■ |
Hertz (Hz) is defined as the unit for designating the frequency of a tone. One Hertz equals one cycle . . . Read More | |
Alpha waves at psychology-glossary.com | ■■■ |
Alpha wave refer to the rhythm of 8 to 12 brain waves per second which is generally associated with relaxation. . . . Read More | |
Action at psychology-glossary.com | ■■■ |
Action includes motor activities, such as moving the head or eyes and locomoting through the environment. . . . Read More |