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22 Cards in this Set
- Front
- Back
3 mechanisms which regulate sleep
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Homeostasis
Circadian cylce Ultradian mechanism |
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Homeostasis
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Sleep Debt
balance of sleep less sleep, need more more sleep, can't sleep |
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Circadian System
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Superchiasmatic nucleus (SCN)
found in the hypothalmus is the pacemaker of sleep/wake cycle in a 24 hour cycle |
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Melatonin
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hormone that turns sleep on
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Zeitgebers
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timegiver
external influnces on sleep cycle |
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Light Therapy
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helps to adjust circadian cycle
exposure 10,000lux for 20 mins |
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Stage 1
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2-5%
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Stage 2
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40-50%
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Stage 3
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12%
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Stage 4
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12%
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Rem
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20-25%
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Delta sleep
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prediminated in the first third of the night
usually seen before Rem and higher in kids |
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Sleep needs
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newborns- 14-18 hrs
12-18 mths- 13-15 hrs 18-3yrs- 12-14 hrs 3-5yrs- 11-13 hrs 5-12yrs- 10-11 hrs Adults-average-7-9 hrs |
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Trace Alternate Patterns
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periods of low voltage between burst of mixed frequency activity
occurs in quiet sleep disappears over 1st month of life |
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Active
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REM
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Quiet
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NREM
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2-6 months
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developed EEG
NREM stages gradually emerge consists of mainly Delta sleep |
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6 months
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K-Complexes seen in stage 2
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1-5 yrs
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4 sleep stages
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5 yrs
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sleep architecture of a adult
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Symptoms of Fragmented Sleep
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Sleep Terrors
Enuresis Bedtime Fears Nocturnal Sweating |
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Consequences of sleep Deprivation
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Physical fatigue
tachycardia memory loss aggression, depression |