1. Do Now Create a K-W-L chart ▫ K: What do you ALREADY KNOW about the stages of sleep and sleep disorders ▫ W: What do you WANT to learn about the stages of sleep and sleep disorders ▫ L: Leave this column blank

2. Do Now Get out your homework. I will be coming around to check it.

3. States of Consciousness Stages of Sleep & Sleep Disorders

4. Biological Rhythms & Sleep Circadian rhythm: internal bio clock; regular bodily rhythms (temp, wakefulness) that occur on a 24 hour cycle ▫ Age & experience can alter it  “owls” to morning-loving “larks”

5. Sleep Stages - every 90 min., cycle through 5 stages -EEG measures sleep act.

7. Stage 4REM Deepest sleep Delta waves Sleep walking Growing (in kids) Sleep talking Wetting the bed Night terrors Rapid eye movement Dreams Muscles relaxed ▫ Essentially paralyzed Genital arousal (despite whether or not dreams are of sexual content) ▫ Erection ▫ Vaginal lubrication Paradoxical sleep: body internally aroused; externally calm 1 – 2 – 3 – 4- 3- 2- REM

8. Why Do We Sleep?

9. Theories About Sleep’s Function 1.Sleep protects. 2.Sleep helps us recover. 3.Sleep helps us remember and think creatively. 4.Sleep may play a role in the growth process.

10. How does sleep loss affect us, and what are the major sleep disorders?

11. Effects of Sleep Deprivation http://www.cnn.com/video/#/video/health/2005/03/29/gupta.sl eepless.in.america.affl?iref=videosearch What else?

12. Sleep Disorders 1. Insomnia: A persistent inability to fall asleep. 2. Narcolepsy: Overpowering urge to fall asleep that may occur while talking or standing up. 3. Sleep apnea: Failure to breathe when asleep.

13. Children are most prone to: Night terrors: The sudden arousal from sleep with intense fear accompanied by physiological reactions (e.g., rapid heart rate, perspiration) which occur during Stage 4 sleep. Sleepwalking: A Stage 4 disorder which is usually harmless and unrecalled the next day. Sleeptalking: A condition that runs in families, like sleepwalking.