Lifespan Changes

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  • Created by: Liss.
  • Created on: 09-05-14 11:31
Infancy
Sleep for around 14 hours per day but not continuously as infants do not have 90 minute sleep cycles. Quiet and active sleep - half of this is active. Period of light sleep before quiet sleep. By 6 months, a circadian rhythm is established.
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Childhood
Age of 5, EEG pattern similar to an adult.12 hours with 30% = REM. Sometimes there are parasomnias.
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Adolescence
Sleep for 9-10 hours, may have phase delay.
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Adulthood
Eight hours per night with 25% REM. May be insomnia/sleep apnoea
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Old Age
More difficulty getting to sleep/wake up. REM to 20% and SWS to as little as 5% - phase advance.
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Crowley et al.
Delayed sleep phase syndrome (open schools earlier).
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Kripke et al.
Six/seven hours = reduced mortality. Eight = 15% increase while this raises to 30% with 10 hours.
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Van Cauter et al.
Reduction of SWS = reduced production of growth hormone = lack of energy and lower bone density.
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Tynjala et al.
Sleep duration is highest in Switzerland at 10 hours for 11/12 but lowers to 9 hours for Israel. 6.5 hours in Korea.
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Card 2

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Age of 5, EEG pattern similar to an adult.12 hours with 30% = REM. Sometimes there are parasomnias.

Back

Childhood

Card 3

Front

Sleep for 9-10 hours, may have phase delay.

Back

Preview of the back of card 3

Card 4

Front

Eight hours per night with 25% REM. May be insomnia/sleep apnoea

Back

Preview of the back of card 4

Card 5

Front

More difficulty getting to sleep/wake up. REM to 20% and SWS to as little as 5% - phase advance.

Back

Preview of the back of card 5
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