Term
| What percentage of a person's life is spent sleeping? |
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Definition
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Term
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Definition
| a person's biological clock; includes a sequence of bodily changes, such as those in body temperature, blood pressure, and sleepiness and wakefulness, that occurs every 24 hours |
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Term
| when does human body temperature fall to its lowest? |
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Definition
| between 3am and 5am in the morning |
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Term
| is it true that if it were not for cues such as sunrise and sunset, people would act as if a day were 25 hours long? |
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Definition
| yes, because of the earth's rotation, a day is 24 hours. For reasons not fully understood, people may be more suited to a 25 hour day |
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Term
| name 4 brain wave patterns |
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Definition
beta waves
alpha waves
theta waves
delta waves |
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Term
| sleep stages are defined by what |
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Definition
| brain wave patterns (can be measured by EEG) |
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Term
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Definition
| when we are awake and alert; these are short and quick waves |
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Term
| Which waves are when we relax and become drowsy |
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Definition
| the waves move from beta to alpha which are a little slower |
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Term
| Name the 1st stage of sleep |
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Definition
| (NREM) - lightest sleep, alpha waves; stage lasts 30-40 mins; vivid dreamlike images occur |
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Term
| 2, 3, and 4th stage of sleep |
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Definition
| (NREM) sleep is deep; brain produces theta waves then delta waves (the slowest waves) |
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Term
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Definition
| stage of deepest sleep, the one that is hardest to wake up from |
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Term
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Definition
| rapid eye movement sleep; occurs about 5 times a night and gets longer each time (max about 1/2 hour); when dreams and nightmares occur |
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Term
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Definition
| non rapid eye movement sleep that happens; occurs in stages 1-4 of sleep |
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Term
| how many times do people go through the 4 stages of sleep and REM in an average 8 hour night? |
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Definition
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Term
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Definition
revive tired body
build resistance to infection
recover from stress |
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Term
| what happens when people don't get sleep? |
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Definition
| 17 yr old Randy Gardner conducted an experiment where he stayed awake 11 days. he became irritable, could not focus his eyes, had speech difficulties and memory lapses |
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Term
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Definition
| when people are deprived of REM sleep, they have to catch up on it by having much more REM sleep when they finally get to sleep |
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Term
| REM deprivation causes what |
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Definition
people to learn more slowly
forget more rapidly what they learned |
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Term
| when do we have the most vivid dreams |
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Definition
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Term
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Definition
they can be in black and white or in color
some dreams can be very realistic
some dreams can be disorganized and less real
REM dreams are clearer than NREM dreams |
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Term
| T/F - people only dream right before they wake up |
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Definition
| false - Most vivid dreams occur in REM sleep which happens about 5 times a night |
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Term
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Definition
| Sigmund Freud thought that dreams reflected a person's wants and urges |
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Term
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Definition
| inability to sleep, sometimes due to anxiety |
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Term
| can people force themselves to fall asleep? |
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Definition
| no, we can only set the stage for sleep |
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Term
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Definition
1. tense the muscles one at a time then let them go
2. avoid worrying in bed; if it persists get up for a while
3. establish a regular routine
4. use pleasant images to relax |
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Term
| nightmares or night terrors |
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Definition
| sleep disturbances that are products of REM sleep that are sometimes caused by upsetting events; night terrors are more severe than nightmares and occur in stage 3 and 4 (often are vague); nightmares occur in REM sleep |
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Term
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Definition
| roaming around during stages of deep sleep without knowing it; occurs mostly in children |
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Term
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Definition
| breathing interruptions during sleep; gasping for air but don't usually wake up; can cause people to be tired during the day; can lead to high blood pressure, heart attacks, and strokes |
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Term
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Definition
| rare problem where people fall asleep suddenly no matter what time of day or where they are |
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