1. States of Consciousness Unit 3
Sleep
States of Consciousness
Unit 3

2. Objectives Define and apply circadian cycles to life.
Determine the characteristics of the stages of sleep as well as the order in which they occur.
Distinguish the various sleep disorders by characteristics, symptoms, causes and effects

3. General Information
We sleep 1/3 of our lives
No one knows exactly why we need sleep, but we do know
All species sleep
Sleep seems to restore our energy
We are more even tempered and mentally healthy when rested

4. Circadian Cycles
Regardless of environment, our bodies function in 24 hour cycles
This is most noticeable when traveling through multiple time zones or working swing shifts
Its difficult to readjust to a new time schedule

5. The Rhythms of Sleep
Sleep has 5 stages, which repeat every 90 minutes of sleep ( REM 1…)
Everyone has different sleep requirements, but generally: children and young adults need the most sleep, adults need 6-8 hours, and the elderly can often sleep 4 hours

6. Characteristics of the Stages
Stage 1: slow pulse, muscle relaxation, eyes roll gently, sleep is light and sleeper may not even know they slept
Stages 2 & 3: progressively deeper sleep, heart rate, breathing, and temperature drop, delta waves increase, and sleeper doesn’t respond to noises or light

7. Stage 4: slow delta waves, heart rate, breathing, blood pressure, and temperature are as low as they will get
Comes in min increments
REM: rapid eye movement, most dreams, increase in heart rate, breathing, blood pressure and temp
Deepest sleep; 25% of your sleep is in REM

8. Sleep Disorders
Sleepwalking/talking: occurs during stage 4; most common in children; more common in boys
Night terrors: happen most in children 4-12; cause violent screaming and thrashing; can never be recalled upon waking
These have been correlated to adults w/ personality disorders, drug/alcohol addictions, and epilepsy

9. Insomnia: temporary inability to sleep or stay asleep; often caused by stress
Apnea: breathing difficulty and snoring during sleep; causes depression, sexual dysfunction, difficulty concentrating, and headaches; most common in middle aged overweight males

10. Narcolepsy: believed to arise from a defect of the central nervous system; causes immediate entry to REM from waking consciousness as well as hallucinations
Cataplexy: affects narcoleptics; hearing and awareness are normal, but muscles slacken (sometimes to the point of total collapse), vision is blurred, and speech is slurred
Triggered by strong emotions

11. What terminology is best associated with jet leg?
Exit Ticket
What terminology is best associated with jet leg?
Write the stages of sleep in order, then list the characteristics of each stage
Briefly describe the symptoms of: sleepwalking/talking, night terrors, insomnia, apnea, narcolepsy, and cataplexy