Stuff that you do well, but not often enough :-) Sleep and Dreams Stuff that you do well, but not often enough :-)
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.
The average sleep cycle lasts 90 minutes. 1-2-3-4-3-2-REM-2-3-4-3-2-REM
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.
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
Why We Sleep Sleep protects. Sleep helps us restore body tissues. Sleep helps growth.
Sleep Disorders/Issues insomnia narcolepsy sleep apnea night terrors sleep walking sleep eating sleep paralysis nightmares enuresis SIDS pseudoinsomnia sexsomnia
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.
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