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Sleep Disorder Specialists Yuma AZ

Looking for Sleep Disorder Specialists in Yuma? We have compiled a list of businesses and services around Yuma that should help you with your search. We hope this page helps you find Sleep Disorder Specialists in Yuma.

Bodyshapers Toning Tanning & Day Spa
(928) 344-8992
1102 East 21st Street
Yuma, AZ
Foxy Lady
(928) 344-6848
670 West Catalina Drive
Yuma, AZ
Faster Health
(928) 783-0112
1051 South Angus Way
Yuma, AZ
Back Indiana Balance
(928) 373-0909
1107 South 5th Avenue
Yuma, AZ
Crystal Spa
(928) 341-9393
2385 South 4th Avenue
Yuma, AZ
Cummings Chiropractic Office P C
(928) 782-4339
242 West 28th Street Suite F
Yuma, AZ
Americana Personalized Fitness & Health Supplement
(928) 726-3978
2450 S 4th Ave # 108a
Yuma, AZ
Face & Body - Massage Therapy
(928) 246-0002
2091 West 25th Street
Yuma, AZ
Full Circle Health Foods
(928) 783-8080
2099 South 4th Avenue
Yuma, AZ
Ace Massage Therapist
(928) 329-0339
2365 West 8th Street
Yuma, AZ

The Different Stages of Sleep


In 1952, sleep-researcher Nathaniel Kleitman discovered that although sleepers tended to have slow, rolling eye movements beneath their lids as they fell asleep, during some portions of their sleep their eyes darted rapidly in a highly coordinated way, moving more quickly and sharply than they could while they were awake. He dubbed the phenomenon rapid eye movement (REM), a phase of sleep that was later related to dreaming.

Later researchers using electroencephalogram (EEG) that measures the electrical activity in the brain discovered that the REM stage of sleep is different from non-REM (NREM) sleep.

Sleep occurs in a series of cycles, each lasting between sixty and ninety minutes. A normal sleep pattern involves four to seven such cycles during the course of the night. On average, people have five or six sleep cycles during a normal nighttime sleep session.

Each cycle has two main parts. 

During the first part, our level of consciousness falls while the level of unconsciousness rises. This part of the cycle involves changes in heart rate and breathing, and an overall slowing of brain activity. We do not dream during this phase. 

In the second part of the cycle, however, we do dream. The characteristic sign of this phase of sleep is rapid eye movement, or REM.

Generally, each ninety-minute sleep cycle contains a non- REM period (or slow-wave sleep) and the REM period. On average, each of these two main periods occupies about 50 percent of the cycle's elapsed time, or about forty-five minutes. However, the balance between the two periods shifts during the course of the night. During the first ninety-minute cycle, the REM phase might last only a few minutes. In the final cycle of the night, REM sleep occupies most of the time, perhaps an hour or more.

Non-REM sleep actually consists of four distinct substages, labeled 1 through 4. The stages are defined according to the ...

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