Rapid eye movement

by seaman

/
  • Streaming + Download

    Includes unlimited streaming via the free Bandcamp app, plus high-quality download in MP3, FLAC and more.

      $1 USD  or more

     

  • Full Digital Discography

    Get all 4 seaman releases available on Bandcamp and save 35%.

    Includes unlimited streaming via the free Bandcamp app, plus high-quality downloads of Rapid eye movement, White, Shikhan, and Floating. , and , .

      $2.60 USD or more (35% OFF)

     

1.
15:36
2.
15:02

about

Stages of Sleep

During sleep, we usually pass through five phases of sleep: stages 1, 2, 3, 4, and REM (rapid eye movement) sleep. These stages progress in a cycle from stage 1 to REM sleep, then the cycle starts over again with stage 1. We spend almost 50 percent of our total sleep time in stage 2 sleep, about 20 percent in REM sleep, and the remaining 30 percent in the other stages. Infants, by contrast, spend about half of their sleep time in REM sleep.

During stage 1, which is light sleep, we drift in and out of sleep and can be awakened easily. Our eyes move very slowly and muscle activity slows. People awakened from stage 1 sleep often remember fragmented visual images. Many also experience sudden muscle contractions called hypnic myoclonia, often preceded by a sensation of starting to fall. These sudden movements are similar to the “jump” we make when startled. When we enter stage 2 sleep, our eye movements stop and our brain waves (fluctuations of electrical activity that can be measured by electrodes) become slower, with occasional bursts of rapid waves called sleep spindles. In stage 3, extremely slow brain waves called delta wavesbegin to appear, interspersed with smaller, faster waves. By stage 4, the brain produces delta waves almost exclusively. It is very difficult to wake someone during stages 3 and 4, which together are calleddeep sleep. There is no eye movement or muscle activity.


The first REM sleep period usually occurs about 70 to 90 minutes after we fall asleep. A complete sleep cycle takes 90 to 110 minutes on average. The first sleep cycles each night contain relatively short REM periods and long periods of deep sleep. As the night progresses, REM sleep periods increase in length while deep sleep decreases. By morning, people spend nearly all their sleep time in stages 1, 2, and REM.

(c) www.sleepassociation.org/patients-general-public/what-is-sleep/

credits

released April 10, 2016

tags

license

about

seaman Saint Petersburg, Russia

Seaman is sound artist based in Saint-Petersburg.

contact / help

Contact seaman

Streaming and
Download help

Redeem code