Sleep Stages and Circadian Rhythms
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary characteristic of sleep spindles?

  • They are solely associated with REM sleep
  • They help maintain a tranquil state during sleep (correct)
  • They promote waking from sleep
  • They increase cognitive processes during sleep
  • N3 sleep is associated with very fast brain waves.

    False

    What is the purpose of K-complexes during sleep?

    To suppress cortical arousal and aid in sleep-based memory consolidation.

    During _____ sleep, most dreaming occurs.

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

    Match the following stages of sleep with their characteristics:

    <p>N2 = Stage with sleep spindles N3 = Slow-wave sleep with delta waves REM = Stage with rapid eye movement and muscle paralysis Hypnic Jerks = Sudden muscle contractions during falling asleep</p> Signup and view all the answers

    What are delta waves primarily associated with?

    <p>NREM sleep, specifically N3</p> Signup and view all the answers

    Touching someone lightly during sleep cannot trigger K-complexes.

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

    What physiological state occurs during REM sleep?

    <p>Muscle paralysis.</p> Signup and view all the answers

    What is the first stage of sleep, characterized by the transition between sleep and wakefulness?

    <p>N1</p> Signup and view all the answers

    What is REM sleep often referred to as, and why?

    <p>Paradoxical sleep due to the brain's high activity while the body is inactive.</p> Signup and view all the answers

    Sleep spindles are associated with the N1 stage of sleep.

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

    What phenomenon might a person experience during N1 stage due to repetitive activities?

    <p>hypnagogic hallucinations</p> Signup and view all the answers

    Circadian rhythms only affect sleep, not wakefulness.

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

    The sudden muscle twitches that can occur as a person falls asleep are known as __________.

    <p>hypnic jerks</p> Signup and view all the answers

    What are the stages of non-REM (NREM) sleep in order?

    <p>N1, N2, N3</p> Signup and view all the answers

    Match the stages of sleep with their key characteristics:

    <p>N1 = Lightest stage of sleep where hypnic jerks may occur N2 = Deeper sleep with sleep spindles and K-complexes N3 = Deep sleep with the lowest brain activity REM = Stage associated with vivid dreaming</p> Signup and view all the answers

    If you want to remember your dreams, you can set your alarm to go off a little earlier than usual, like ______ minutes.

    <p>15</p> Signup and view all the answers

    Match the sleep stage with its characteristic:

    <p>N1 = Light sleep where you can be easily awakened N2 = Sleep where eye movement stops and heart rate slows N3 = Deep sleep known for slow-wave activity REM = Dreaming occurs and the brain appears very active</p> Signup and view all the answers

    What brain activity is primarily observed in the N2 stage of sleep?

    <p>Theta waves, sleep spindles</p> Signup and view all the answers

    Circadian rhythms have no impact on sleep patterns.

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

    How many times does a normal sleeper cycle through the stages of sleep in a night?

    <p>About four to five times</p> Signup and view all the answers

    Hypnic jerks occur during the waking stages of sleep.

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

    What are two common sensations experienced during the N1 stage of sleep?

    <p>hypnagogic hallucinations and a feeling of falling</p> Signup and view all the answers

    What determines how long each sleep stage lasts?

    <p>Age and duration of sleep</p> Signup and view all the answers

    Study Notes

    Sleep Stages

    • Sleep occurs in ~90-minute cycles
    • Four main stages:
      • N1 (Non-REM): Transition between wakefulness and sleep; theta waves; hypnagogic hallucinations (e.g., seeing/hearing things that aren't there, feeling like you're falling).
      • N2 (Non-REM): Slightly deeper sleep; harder to wake up; theta waves, sleep spindles, and K-complexes. Sleep spindles may inhibit cognitive processing. K-complexes are different brain activity that may suppress stimuli.
      • N3 (Non-REM): Slow-wave sleep; delta waves (0.5-2 Hz); difficult to wake up; sleepwalking and talking occur in this stage.
      • REM (Rapid Eye Movement): Eyes move rapidly beneath lids; paralysis of most muscles; dreaming commonly occurs; called paradoxical sleep because the brain is active but the body is inactive.

    Circadian Rhythms

    • Circadian rhythms are 24-hour bodily rhythms.
    • Body temperature rises during the day, dips in the afternoon, rises again in the evening, and falls at night.
    • Affect sleep and wake cycles .
    • Daylight is a primary cue for circadian rhythms.
    • Artificial light can impact circadian clocks (jet lag).
    • Biological clocks adapt to different time zones (e.g., adjusting to daylight savings).
    • Circadian rhythms change with age. Young adults often stay up later, older people typically go to bed and wake up earlier.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Description

    Explore the intricate world of sleep with this quiz on sleep stages and circadian rhythms. Understand the various phases of sleep, from non-REM to REM, and learn how circadian rhythms influence bodily functions throughout the day. Perfect for students and anyone curious about sleep physiology.

    More Like This

    Circadian Rhythms and Sleep Stages Quiz
    30 questions
    Circadian Rhythm and Sleep Stages
    15 questions

    Circadian Rhythm and Sleep Stages

    MiraculousBildungsroman4805 avatar
    MiraculousBildungsroman4805
    Use Quizgecko on...
    Browser
    Browser