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While We Sleep, Our Mind Goes on an Amazing Journey
Sleep deprivation facts
- More than 80 million American adults suffer from chronic sleep deprivation.
- Fatigue contributes to more than a million auto accidents each year.
- About one-third of us will suffer from some form of sleep disorder.
- People with Kleine-Levin syndrome will sleep nearly nonstop for a week or two and return to regular cycles without any side effects.
- 4 % of US adults take sleeping pills in any given month.
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Key Ideas
Dreams as therapists
Your dreams may be ways of confronting emotional dramas...
Fight-or-flight training
One of the areas of the brain that’s most active during dreaming is the amygdala - the part of the brain associated with the survival instinct and the fight-or-flight response.
One theory suggests dreams may be the brain’s way of getting you ready to deal with a threat. Fortunately, the brainstem sends out nerve signals during REM sleep that relax your muscles. That way you don’t try to run or punch in your sleep.
Dreams as your muse
One theory for why we dream is that it helps facilitate our creative tendencies.
Without the logic filter, you might normally use in your waking life that can restrict your creative flow, your thoughts and ideas have no restrictions when you’re sleeping.
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Slow-wave sleep (deep sleep) – SWS
About 80% of our sleeping is of the SWS variety, identified by slow brain waves, relaxed muscles and deep breathing.
Deep sleep is important for the consolidation of memories. New experience...
Rapid eye movement (dreaming) - REM
Dreaming accounts for 20% of our sleeping time.
The length of dreams can vary from a few seconds to almost an hour. During REM sleep, the brain is highly active. The muscles are paralyzed, and the heart rate increases. Breathing can become erratic.
Sleep quantity
Although eight hours is the common mention, optimum sleep can vary from person to person and from age to age.
One review that worked through 320 research articles concluded 7 - 9 hours of sleep are enough for adults. According to experts, too little or too much sleep can both have a negative impact on your health.
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Everybody Dreams
Adults and babies alike dream for around two hours per night—even those of us who claim not to.
Researchers have found that people us...
You Forget Most of Your Dreams
According to one theory about why dreams so difficult to remember, the changes in the brain that occur during sleep do not support the information processing and storage needed for memory formation to take place.
Not All Dreams Are in Color
While most people report dreaming in color, there is a small percentage of people who claim to only dream in black and white.
In studies where dreamers have been awakened and asked to select colors from a chart that match those in their dreams, soft pastel colors are those most frequently chosen.