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22 Cards in this Set

  • Front
  • Back
3 mechanisms which regulate sleep
Homeostasis
Circadian cylce
Ultradian mechanism
Homeostasis
Sleep Debt

balance of sleep

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