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Sleep Rhythms

Sleep Rhythms. Brandon and Morgan. Circadian Rhythms:. An endogenous, or self-sustained clock that is built into our systems. They mainly focus on a 24-hour cycle. They even exist in various environments and conditions. Sleep Patterns.

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Sleep Rhythms

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  1. Sleep Rhythms Brandon and Morgan

  2. Circadian Rhythms: • An endogenous, or self-sustained clock that is built into our systems. They mainly focus on a 24-hour cycle. They even exist in various environments and conditions.

  3. Sleep Patterns The brain cycles through five stages of sleep in 90 minutes, giving an individual around 5-6 sleep cycles per night.

  4. Stages • Stage 1: A decline in wakefulness is present. However, one can be awakened without difficulty. One might not know they have been sleeping. • Stage 2: This stage shows larger peaks and valleys in wavelengths. Spontaneous muscle relaxing and tensing occurs. The heart rate slows and body temperature decreases. • Stage 3 and 4: Deep sleep stages. They emit delta waves, very slow sleep waves. One may be disoriented if awakened.

  5. REM Sleep • Taking place after these stages is a cycle of REM (rapid eye movement) sleep. • This stage is very brief, taking up only about 20% of sleep. • During this stage, muscles become inactive, but dreams seem to become much more vivid. • It helps consolidate memories and develop the central nervous systems of infants. • The amount of time REM Sleep lasts depends on physiological factors

  6. Brain Waves during the 5 stages of sleep

  7. Affects On Teenagers • Due to teens rapid changing bodies, hectic schedules, and the wrong view on sleep can cause one to not obtain the proper amount of sleep. • Puberty is closely linked to teens disrupted sleep rhythms. • Before puberty a teenagers body allows then to become sleepy around 8 or 9 pm. • But when puberty begins their sleep rhythm shifts back a couple hours which is know as "sleep phase delay" now a teen will grow sleepy around 11. • Late nights of studying and socializing constantly before bed will cause a teenagers sleep rhythm to be off balanced as well. • A teens health is quickly impacted caused by lack of sleep due to an unsettled sleep rhythm, all leading to increasing chances of cardio vascular events, obesity, and possible neurological problems such as depression or bipolar disorder.

  8. Citations • http://www.webmd.com/sleep-disorders/excessive-sleepiness-10/sleep-101 • http://www.medicalnewstoday.com/articles/247927.php • http://psychology.about.com/od/statesofconsciousness/a/SleepStages.htm • http://psychologytoday.com/articles/sleep-rhythms • http://science.howstuffworks.com/life/inside-the-mind/human-brain/dream2.htm

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