228428
Description
Mind Map by davieschloe7, updated more than 1 year ago
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Created by davieschloe7
about 11 years ago
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The nature of sleep and lifespan changes
- Infancy
- Sleep 16 hours a day
- Not continuous
- Sleep cycles shorter than
90 minutes
- Not continuous
- By 6 months old a
circadian rhythm is
established
- By 1 year infants
sleep mainly at
night, with some
naps during the day
- Periods of deep sleep
lengthen and there is
reduction in REM sleep
- Periods of deep sleep
lengthen and there is
reduction in REM sleep
- Evaluation
- Daytime sleep adaptive
mechanism - makes life easier
for parents
- REM sleep linked to
production of neurotransmitters
and consolidation of memories
- Daytime sleep adaptive
mechanism - makes life easier
for parents
- Sleep 16 hours a day
- Childhood
- By age 5 children have EEG
patterns that look like those of
an adult but they sleep more (12
hours a day)
- Still more REM activity
than adults (30% of sleep
time)
- Boys sleep more than girls
- Not uncommon for children to
experience parasomnias such
as sleep walking or night terrors
- By age 5 children have EEG
patterns that look like those of
an adult but they sleep more (12
hours a day)
- Adolescence
- Need for sleep increases slightly
from childhood: 9-10 hours a night
- Circadian rhythms change so teenagers feel
more awake later at night and have phase delay
(more difficulty getting up early)
- Evaluation
- Change in sleeping pattern
- Hormones primarily released at night
- Hormones primarily released at night
- Real world application
- Wolfson and Carskadon (2005)
- Recommended school
should begin later
- Recommended school
should begin later
- Wolfson and Carskadon (2005)
- Change in sleeping pattern
- Need for sleep increases slightly
from childhood: 9-10 hours a night
- Adulthood
- Sleep 8 hours a night
- 25% REM sleep
- Parasomnias less likely but other
sleep disorders such as insomnia
is more likely
- Older people have more
difficulty going to sleep and
wake up more frequently
- Evaluation
- Kripke et al. (2002)
Annotations:
- Surveyed over 1 million adult men and women and found that people sleeping for only 6 or 7 hours had a reduced mortality risk, whereas those sleeping 8 had a 15% increase in risk of death, and over 30% for people who slept 10 hours. However, there may be other factors affecting this such as underlying illness
- SWS sleep is reduced in
old age explaining why
older people are more
easily woken
- Van Cauter et al. (2000)
Annotations:
- Less SWS means less growth hormones which explains lack of energy and lower bone density in older people
- Van Cauter et al. (2000)
- Kripke et al. (2002)
- Sleep 8 hours a night
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