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Definition
- proposed by Ernest Hilgard
- during hypnosis our consciousness divides into 2 streams
- part of consciousness is aware oh hypnotist and the external world
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| a hypnotized subjects awareness of experiences that go unreported during hypnosis |
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| Milestone in the scientific study of sleep |
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Definition
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| Aserinsky and Kleitman's discovery of REM sleep in 1950's |
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Definition
| periodic fluctuation in psychological functioning |
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Definition
| changes in alertness, daydreaming |
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Definition
- sleep, body temperature, blood pressure, urine production
- 24 hour biological cycle
- we tend to go to sleep as body temp falls
- we tend to awaken as body temp rises
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Definition
| seasonal affective disorder, changes in sexual activity |
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| Electroencephalogram (EEG) |
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Definition
| measures changes in brains cortex |
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Definition
| measures muscle tone: ongoing tension of muscle while supporting the body |
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Definition
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Definition
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Definition
| waves that show sleep patterns |
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Definition
| bursts of high frequency waves |
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Definition
| low frequency, high amplitude. they look like upside down V's |
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Definition
| sensory experience at sleep onset (transition from awake to asleep). happens during stage 1. |
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Definition
| sensory experience sometimes experienced among awakening |
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| Sleep Walking and Bedwetting |
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Definition
| occurs at the end of the delta stage |
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Term
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Definition
- continuous through REM sleep
- EMG: shows relaxed muscle tone
- Erections: penis and clitoris
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Term
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Definition
- Periodic: sometime you have it, sometimes you dont
- Eye movements
- middle ear twitches
- Vivid dreams are reported about 85% when awakened from REM sleep
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Term
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Definition
- 90 minute cycle imposed on a 24 hour cycle
- REM periods increase in duration through the night
- Delta decreases in duration
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Term
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Definition
- Newborn: 16 hours (fetuses more)
- 3 year old: 12 hours
- 18 year old: 8 hours
- 50 year old: 6 hours
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Term
| Decreases in REM with age |
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Definition
- Newborn: 50% of sleep is REM sleep
- Tappers off until 5 years old: 20% is REM
- Stays at 20% for life
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Term
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Definition
- get sleepy
- suppression of immune system
- impaired creativity
- slow performance
- misperceptions
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Term
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Definition
- lasts about 5-10 minutes
- breathing and heart rate slows
- hypnogogic imagery
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Term
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Definition
- lasts about 20 minutes
- little to no eye movement
- some muscle tone
- EEG: sleep spindle with k complexes
- mundane thoughts (simple thoughts)
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Term
| STAGES 3 and 4 (delta sleep) |
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Definition
- "Deep sleep"
- little to no eye movement
- some muscle tone
- EEG: DELTA WAVES-low frequency, high amplitude
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Term
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Definition
| sleep walking and bedwetting because everything is relaxed |
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Term
| What is the effect of total sleep deprivation on rats? |
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Definition
- control rats did not die
- all experimental rats died in 11-32 days
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Term
| How were the rats prevented from sleeping? |
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Definition
- forced walking
- dipped in water
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Term
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Definition
| animal is paired with an experimental animal; each receives the same treatment but the treatment is controlled by experimental animals behavior |
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| What are the effects of REM sleep deprivation? |
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Definition
become agitated and impulsive
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Term
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Definition
| tendency for REM sleep to increase following REM sleep deprivation |
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| 4 major types of sleep theories (why we sleep) |
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Definition
- Protection: predator=sleeps wherever, prey= hides to sleep
- Recuperation
- Aids Memory
- Growth
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