importance of sleep Flashcards

1
Q

the sleep cycle

A
  • biological clock based on 24h sleep-wake cycle
  • circadian rhythm
  • internal clock
  • controlled by brain precesses in response to wake/sleep hours and daylight/darkness
  • darkness increases melatonin hormone which increases sleepiness
  • internal clock disrupted by work, travel, early school starts, daylight deprivation, over exposure to artificial light at night
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2
Q

stages of sleep

A

NON REM
- stage N1
- stage N2
- stage N3
- stage N4
REM

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3
Q

Non REM stage N1

A
  • transition to sleep
  • eyes moving slowly, muscle activity slows, easily awakened
  • lasts about 5 minutes
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4
Q

Non REM stage N2

A
  • light but true sleep
  • eye mvt stops, heart rate slows, body temp drops
  • lasts from 10-25min
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5
Q

Non REM stage N3 + N4

A

deep sleep and very deep sleep
- deep sleep, very slow brain waves
- physically restorative

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6
Q

REM

A
  • dream stage of sleep
  • starts 70-90 min after falling asleep
  • Rapid Eye Movement
  • shallow breathing
  • HR and BP increases
  • arms and legs paralyzed
  • sufficient REM positively correlated w/ cognitive function, creativity, memory consolidation
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7
Q

the sleep cycle stages timeline

A
  • composed of REM and NON REM stages
  • the amount of time spent in each cycle changes as the night progresses
  • most deep sleep occurs in the first half of the night
  • later in the night stage N2 and REM alternate
  • REM sleep lengthens in the early morning hours
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8
Q

importance of REM and deep sleep

A
  • all stages important but especially N3-N4 and REM sleep
  • N3-N4: swim growth and dev, repairing muscles and tissues, boosting immune function
    -the body will prioritize deep sleep over REM sleep if sleep is insufficient
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9
Q

% of sleep stages

A

50% stage 2
20% in REM
30% all other stages

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10
Q

importance of REM sleep

A
  • renews the mind by assisting w/ learning and memory
  • the brain consolidates and processes information learned throughout the day
  • forms neural connection assisting w/ memory function
  • neurotransmitter boost, including mood enhancers such as serotonin and dopamine
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11
Q

recommended hours of sleep

A

*you’re than 4months: sleep pattern vary
*babies 4months-1y/o: 12-16h/day
*1-2 y/o: 11-14h/day
*3-5 y/o: 10-13h/day
*6-12y/o: 9-12h/day
*13-18 y/o: 8-10h/day

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12
Q

extrinsic factors of getting less sleep

A
  • increased social opportunities and obligations
  • ACADEMIC REQUIREMENTS
  • 24/7 availability of commodities and technology
  • extracurricular activities
  • sports commitments
  • less parental monitoring as adolescents age
  • part time work
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13
Q

importance of sleep across childhood and adolescents

A

physical, cognitive and emotional impact
- alertness and attention
- cognitive performance
- resiliency
- vocabulary acquisition
- learning and memory
- growth, especially during infancy
- memory consolidation in toddlers
- executive attention
- motor skill dev

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14
Q

consequence of inadequate sleep

A

consequence of inadequate sleep
- allergic rhinitis
- immune system dysfunction
- anxiety and depression
- long term negative effects on academic performance and issues of mental health, including risk taking behaviour and substance abuse
- focus, attention

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15
Q

insufficient sleep and childhood obesity

A
  • hormones: increase ghrelin and decreased leptin
  • changes in eating behaviour
  • reduced PA/ increased sedentary
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16
Q
A