KIN240: Principles of Biobehavioral Health Sleep
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Questions and Answers

What is sleep health characterized by?

  • Poor timing of sleep
  • High levels of physical activity during the day
  • Subjective satisfaction with sleep and sustained alertness during waking hours (correct)
  • Excessive efficiency and duration of sleep

    • How is the state of the literature on sleep mostly focused?

  • On the potential benefits of good sleep
  • On the avoidance of problematic sleep (correct)
  • On the quantity and quality of sleep needed for optimal health
  • On excessive physical activity during the day

    • What does sleep deficiency refer to?

  • Excessive time spent in bed
  • The avoidance of problematic sleep
  • A deficit in the quantity or quality of sleep obtained for optimal health (correct)
  • Sleeping in accordance with individual social demands

    • Which era's perspectives on health does the current orientation of sleep research resemble?

    <p>Pre-1940's era</p> Signup and view all the answers

    What aspect of sleep does most research on sleep as it relates to health focus on?

    <p>Negative consequences of poor or restricted sleep</p> Signup and view all the answers

    What is the relationship between physical activity and sleep as per the text?

    <p>The relationship between physical activity and sleep is an expected outcome</p> Signup and view all the answers

    What is the gold–standard approach for assessing sleep stages?

    <p>Polysomnography (PSG)</p> Signup and view all the answers

    Which organization sets criteria for sleep stages assessment?

    <p>American Academy of Sleep Medicine</p> Signup and view all the answers

    What is a limitation of the gold–standard approach for assessing sleep stages?

    <p>Requires specially equipped sleep laboratories</p> Signup and view all the answers

    What do devices like Fitbit and Apple watches rely on to assess sleep stages?

    <p>Heart rate and accelerometry measures</p> Signup and view all the answers

    Which stage of sleep is characterized by rapid eye movements (REM)?

    <p>REM</p> Signup and view all the answers

    What does EEG-based technology primarily assess in relation to sleep stages?

    <p>EEG activity</p> Signup and view all the answers

    What is the primary purpose of the various metabolic and inflammatory markers mentioned in the text?

    <p>To activate the sleep-promoting pathway and induce sleep more quickly</p> Signup and view all the answers

    What is the main effect of poor sleep on physical performance?

    <p>It contributes to a greater awareness of physical exertion and cognitive impairments</p> Signup and view all the answers

    What is the relationship between poor sleep and the risk of exercise-related injury, according to the text?

    <p>Poor sleep increases the relative risk of incurring an exercise-related injury</p> Signup and view all the answers

    What is the primary reason why poor sleep may impair physical performance?

    <p>It contributes to a greater awareness of physical exertion and cognitive impairments</p> Signup and view all the answers

    What is the primary function of the NREM Sleep stage 3 (N3) mentioned in the text?

    <p>To repair and regenerate the body</p> Signup and view all the answers

    What is the main conclusion drawn in the text about the relationship between poor sleep and physical performance?

    <p>Poor sleep has no direct impact on physical performance</p> Signup and view all the answers

    During which time frame does the peak of the wake-promoting signal occur?

    <p>10pm - 1am</p> Signup and view all the answers

    What is the role of the ventrolateral preoptic nucleus (VLPO) in the sleep-promoting signal?

    <p>Inhibits pathways in the ascending arousal system</p> Signup and view all the answers

    Which neural circuits are commonly described as a flip-flop switch in the circadian system?

    <p>Dorsomedial Hypothalamic Nucleus and Ventrolateral Preoptic Nucleus</p> Signup and view all the answers

    What happens to the circadian sleep-promoting signal during the course of sleep?

    <p>Becomes progressively stronger</p> Signup and view all the answers

    Which nucleus becomes active to promote sleep when the signal from DMH diminishes?

    <p>Ventrolateral Preoptic Nucleus</p> Signup and view all the answers

    Which statement best describes the benefit of cycling through different sleep stages?

    <p>It allows for greater environmental awareness and rapid transitions to wakefulness.</p> Signup and view all the answers

    Why does the time spent in NREM Sleep stage 2 (N2; light) increase as sleep duration progresses?

    <p>To allow for greater environmental awareness and responsiveness to external stimuli.</p> Signup and view all the answers

    What is the primary function of the dorsomedial hypothalamic nucleus (DMH) mentioned in the text?

    <p>It integrates signals that help keep the individual awake when environmental risks are present.</p> Signup and view all the answers

    Why is spending nearly half of the total sleep duration in NREM Sleep stage 2 (N2; light) biologically advantageous?

    <p>It provides a general degree of environmental awareness to avoid predation and increase survival.</p> Signup and view all the answers

    Which sleep stage is characterized by exceptionally low muscle tone and a prolonged transition to fully conscious states?

    <p>Both NREM Sleep stage 3 (N3; slow-wave) and REM sleep</p> Signup and view all the answers

    Which statement best describes the relationship between sleep stages and environmental risks?

    <p>The individual is more likely to be aware of environmental risks during NREM Sleep stage 2 (N2; light) as sleep duration increases.</p> Signup and view all the answers

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