State of Consciousness

SleepHypnosis
Drugs

Sleep
*Sleep is a state of consciousness
* we are less aware of our surrounding
Consious, Subconscious, Unconscious
Why do we daydream
* they can help us prepare for future events.
* they can nourish our social development
* can substitute for impulsive behavior
Fantasy Prone Personalities
* someone who imagines and recalls experiences with lifelike vividness and who spends considerable time fantasizing.
Biological Rhythms
Annual cycles: seasonal variations (bears hibernation, seasonal affective disorder)
28 day cycles: menstrual cycle.
24 hour cycle: our circadian rhythm.
90 minute cycle: sleep cycles.
Circadian Rhythm
*our 24 hour biological clock.
* our body temperature and awareness changes throughout the day.
* it is best to take a test or study during your circadian peaks.

Sleep Stage
* There are 5 identified stages of sleep.
* takes about 90-100 to pass through all 5 waves
* the brain's waves will change according to the sleep stage you are in
* the first five stages are known as NREM sleep.
* the fifth stage is called REM sleep.
Stage 1
*kind of awake and kind of asleep.
* only lasts a few minuets and you usually only experience it once a night
* eyes begin to roll slightly
* your brain produces theta waves ((high amplitude, low frequency (slow))
Stage 2
* this follows stage 1 sleep and is the "baseline of sleep".
* this stage is part of the 90 minuet cycle and occupies approximately 45-60% of sleep.
* more theta waves that get progressively slower
Stage 3
* slow wave sleep
* you produce Delta waves
* if awoken you will be groggy
* vital for restoring body's growth hormones and good overall health.
Stage three & four
*may last 15-30 minuets
* it is called "slow wave" sleep because brain activity slows down dramatically from the "theta" rhythm for Stage 2 to a much slower rhythm called "delta" and the height or amplitude of the waves increases dramatically
Stage Three and four
* contrary to popular belief, it is delta sleep that is the "deepest" stage of sleep (not REM) and the most restorative
* it is delta sleep that a sleep-deprived persons brain craves the first and foremost.
* in children, delta sleep can occupy up to 40% of all sleep time and this is what makes children unworkable or "dead asleep" during most of the night.
REM Sleep
* rapid eye movement
* often called paradoxical sleep
* brain is very active.
* dreams usually occur in REM sleep.
* body is essentially paralyzed.
Stage T: REM SLEEP
* composes 20-25% of normal nights sleep.
* breathing, heart rate and brain wave activity quicken.
* vivid dreams can occur.
* from REM, you go back to stage 2