Podcast
Questions and Answers
During REM sleep, what physiological processes exhibit irregular or rapid changes?
During REM sleep, what physiological processes exhibit irregular or rapid changes?
- Body temperature regulation
- Heart rate and breathing (correct)
- Digestive enzyme secretion
- Hair follicle activity
What is the primary function of the pons during REM sleep that leads to sleep paralysis?
What is the primary function of the pons during REM sleep that leads to sleep paralysis?
- Suppressing motor neuron activity to prevent acting out dreams (correct)
- Enhancing sensory perception to heighten dream vividness
- Regulating hormonal release to promote muscle relaxation
- Coordinating rapid eye movements with visual dream content
Why is REM sleep often referred to as 'paradoxical sleep'?
Why is REM sleep often referred to as 'paradoxical sleep'?
- The brain's electrical activity closely resembles that of wakefulness despite a state of deep sleep. (correct)
- Metabolic rate and body temperature drop significantly lower than in other sleep stages.
- The body's muscles are highly active despite the individual appearing asleep.
- The sleeper is easily awakened by external stimuli, indicating a light sleep stage.
Which characteristic of REM sleep suggests a high level of brain activity comparable to wakefulness?
Which characteristic of REM sleep suggests a high level of brain activity comparable to wakefulness?
In what way does the body maintain homeostasis during REM sleep despite experiencing rapid physiological fluctuations?
In what way does the body maintain homeostasis during REM sleep despite experiencing rapid physiological fluctuations?
If the pons malfunctions during REM sleep, what is the most likely outcome?
If the pons malfunctions during REM sleep, what is the most likely outcome?
During which sleep stage is an individual most likely to experience disorientation and confusion upon being awakened?
During which sleep stage is an individual most likely to experience disorientation and confusion upon being awakened?
Which physiological processes are most characteristic of the N2 sleep stage?
Which physiological processes are most characteristic of the N2 sleep stage?
What is the primary reason inadequate sleep, specifically a deficiency in N3 sleep, can negatively impact children's growth?
What is the primary reason inadequate sleep, specifically a deficiency in N3 sleep, can negatively impact children's growth?
What is the distinction between N1 and N2 sleep stages regarding ease of arousal and awareness upon waking?
What is the distinction between N1 and N2 sleep stages regarding ease of arousal and awareness upon waking?
In which sleep stage, other than REM, is sleep talking most likely to occur?
In which sleep stage, other than REM, is sleep talking most likely to occur?
What is the relationship between physical activity during the day and time spent in N3 sleep?
What is the relationship between physical activity during the day and time spent in N3 sleep?
An individual performs complex actions while asleep, such as sending a text message, but has no recollection of the event the following morning. Which sleep stage is most likely associated with this behavior?
An individual performs complex actions while asleep, such as sending a text message, but has no recollection of the event the following morning. Which sleep stage is most likely associated with this behavior?
Besides physical growth in children, what additional restorative processes occur during N3 sleep in both children and adults?
Besides physical growth in children, what additional restorative processes occur during N3 sleep in both children and adults?
What is the defining brain activity pattern that characterizes N3 sleep in contrast to other sleep stages?
What is the defining brain activity pattern that characterizes N3 sleep in contrast to other sleep stages?
If someone is found sleepwalking, but NOT in REM sleep, what stage are they most likely in?
If someone is found sleepwalking, but NOT in REM sleep, what stage are they most likely in?
Flashcards
REM Sleep
REM Sleep
Sleep stage where brain activity resembles wakefulness.
Brain activity in REM
Brain activity in REM
During REM sleep, the brain is highly active, similar to when awake.
Physiological changes in REM
Physiological changes in REM
Physiological functions fluctuate: Heart rate, blood pressure, and breathing become rapid and irregular.
Sleep Paralysis
Sleep Paralysis
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"Paradoxical sleep"
"Paradoxical sleep"
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Dreams with REM
Dreams with REM
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Sleep Talking Stage
Sleep Talking Stage
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N2 Sleep Stage
N2 Sleep Stage
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N2 Brain Activity
N2 Brain Activity
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N3 Sleep Stage
N3 Sleep Stage
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N3 Sleep Characteristics
N3 Sleep Characteristics
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N3 Growth Hormone
N3 Growth Hormone
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Sleep impact on Growth
Sleep impact on Growth
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Sleep Repair function
Sleep Repair function
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Activity & N3 Sleep
Activity & N3 Sleep
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Soreness & Sleep
Soreness & Sleep
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Study Notes
- About 90-minute cycles of sleep occur.
- Different stages of sleep are experienced in every 90-minute period
- Sleep includes two types: REM and Non-REM.
Non-Rapid Eye Movement (N-REM)
- N-REM includes 3 stages.
- N1 is light sleep
N1-Light Sleep
- This is a 10-15 minute first stage of sleep
- One does not notice their sleeping during this stage, and everything is decreasing.
- Hypnic or hypnagogic jerk may occur when sleep starts, feeling like one is falling.
- Hypnagogic hallucinations may occur, where one is still seeing or hearing images even if they're not a dream, do not make sense, carry over from real life, and thoughts make no sense.
N2-True Sleep
- Brain activity slows.
- The heart rate and muscle tension reduces.
- This is deeper sleep, not the deepest
- It is harder to wake up than N1, which is easy to wake up from
- If woken up, people will likely realize they were sleeping
- It is considered a medium depth of sleep
N3-Deep Sleep
- Further slowing of brain activity occurs.
- A person is hard to awaken and disoriented when awakened.
- Growth hormones are released from the pituitary .
Rapid Eye Movement (REM)
- Brain waves resemble wakefulness,.
- Eyes move back and forth.
- Heart rate, blood pressure, and breathing are rapid or irregular.
- Sleep paralysis occurs because the pons shuts down motor messages.
- This is "paradoxical sleep".
- Dreams occur.
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