1. Stuff that you do well, but not often enough :-)
Sleep and Dreams
Stuff that you do well, but not often enough :-)

2. Sleep There are 5 stages of sleep: stages 1–4 and REM sleep.
Stage 1 is the lightest, and Stage 4 is the deepest.
The stages are identified by different brain wave patterns from an EEG.

3. The average sleep cycle lasts 90 minutes.
REM REM

4. We spend 80% of sleep in non-REM sleep and 20% in REM sleep.
If sleep deprived, we go quickly to Stage 4.
If REM deprived, we have extended periods of REM sleep.

5. Length of Sleep Varies from person to person and with age:
Babies: 16–18 hours (50% REM)
Teenagers: 10–11 hours
20s: 8 hours
70s: 5 hours

6. Why We Sleep Sleep protects. Sleep helps us restore body tissues.
Sleep helps growth.

7. Sleep Disorders/Issues
insomnia
narcolepsy
sleep apnea
night terrors
sleep walking
sleep eating
sleep paralysis
nightmares
enuresis
SIDS
pseudoinsomnia
sexsomnia

8. Why We Dream: Theories
Dreams are used to reorganize information in the brain.
Dreams are random brain activity, but are influenced by past experiences (activation- synthesis theory).
Dreams help maintain the brain’s neural pathways.

9. According to Freud, dreams reveal our hidden (unconscious) desires through symbolism.
manifest content: what you see in the dream
latent content: what you see in the dream actually represents