The Sleep Cycle Unit 3 Lesson 2. Objectives: Define sleep Define sleep Identify the main theories of...
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Transcript of The Sleep Cycle Unit 3 Lesson 2. Objectives: Define sleep Define sleep Identify the main theories of...
![Page 1: The Sleep Cycle Unit 3 Lesson 2. Objectives: Define sleep Define sleep Identify the main theories of sleep Identify the main theories of sleep Differentiate.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649dc55503460f94ab9224/html5/thumbnails/1.jpg)
The Sleep CycleThe Sleep Cycle
Unit 3Unit 3
Lesson 2Lesson 2
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Objectives:Objectives:
• Define sleepDefine sleep
• Identify the main theories of sleepIdentify the main theories of sleep
• Differentiate between the stages of Differentiate between the stages of sleepsleep
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Warm UpWarm Up
• Describe two of the Describe two of the five different levels five different levels of consciousness of consciousness we talked about we talked about yesterday.yesterday.
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What Is Sleep?What Is Sleep?
• An altered state in An altered state in which people which people become relatively become relatively unaware of unaware of external external stimulationstimulation
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Studying SleepStudying Sleep
• (1953) EEG records (1953) EEG records brain wave activitybrain wave activity– Frequency and Frequency and
strengthstrength
• EOG record eye EOG record eye movementsmovements
• EMG record muscle EMG record muscle movementsmovements
• EKG records activity of EKG records activity of the heartthe heart
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Online ActivityOnline Activity
• Use PsychSim 5.0 “EEG & Sleep Use PsychSim 5.0 “EEG & Sleep Stages” atStages” at
http://www.worthpublishers.com/http://www.worthpublishers.com/exploring5e/content/psychsim5/EEGexploring5e/content/psychsim5/EEG%20and%20Sleep%20Stages/%20and%20Sleep%20Stages/PsychSim_Shell.htmlPsychSim_Shell.html
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EEG and Sleep StagesEEG and Sleep Stages
• Awake = Beta WavesAwake = Beta Waves
• Stage 1 = Theta WavesStage 1 = Theta Waves– Hypnagogic StateHypnagogic State
• Stage 2 = Theta WavesStage 2 = Theta Waves– Sleep SpindlesSleep Spindles
• Stage 3 = Delta WavesStage 3 = Delta Waves
• Stage 4 = Delta WavesStage 4 = Delta Waves– Bedwetting, Sleep talk/walkBedwetting, Sleep talk/walk– Night TerrorsNight Terrors
• REM = Mimic’s Beta WavesREM = Mimic’s Beta Waves– Atonia, DREAMING!Atonia, DREAMING!
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Sleep CycleSleep Cycle
• Roughly 5 periods Roughly 5 periods of REM sleep per of REM sleep per nightnight– Sleep becomes Sleep becomes
lighter as night lighter as night wears onwears on
– REM sleep REM sleep becomes longer becomes longer towards amtowards am
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Why Do We Sleep?Why Do We Sleep?
• Evolutionary TheoryEvolutionary Theory: Protective function, keeps : Protective function, keeps people tucking away at night, safe from predators.people tucking away at night, safe from predators.
• Recuperative TheoryRecuperative Theory: Conserves energy, restores : Conserves energy, restores body tissues depleted during daily activitybody tissues depleted during daily activity– REM: hormones released that influence thinking REM: hormones released that influence thinking
& memory formation, mental organization; & memory formation, mental organization; counteract fatigue, irritability, inattentioncounteract fatigue, irritability, inattention
– NREM: body replenishes itself (tissue restoration NREM: body replenishes itself (tissue restoration and release of growth hormone)and release of growth hormone)
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Why Do We Sleep At Night?Why Do We Sleep At Night?
• Circadian RhythmCircadian Rhythm– Internally Internally
generated generated sleep/wake cycle sleep/wake cycle connected to 24-connected to 24-hour pd of earth’s hour pd of earth’s rotationrotation
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How Much Sleep Do I Need?How Much Sleep Do I Need?
• InfantsInfants– 20 hours20 hours
• 50% REM50% REM
• Children/AdolescentsChildren/Adolescents– 10 hours10 hours
• 25-30% REM25-30% REM– Bed Later, Up LaterBed Later, Up Later
• AdultsAdults– 8 hours8 hours
• 20% or less REM20% or less REM
• Elderly Elderly – 6 hours6 hours– Bed Later, Up EarlierBed Later, Up Earlier
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What If I Miss Sleep?What If I Miss Sleep?
• Effects On BodyEffects On Body
– Immune system Immune system weakensweakens
– Metabolic Metabolic malfunctionmalfunction
– Varied body tempVaried body temp
• Effects On BrainEffects On Brain– MoodinessMoodiness– Decreased cognitive Decreased cognitive
performanceperformance• Learn slower, Learn slower,
remember less, loss remember less, loss concentration & concentration & creativitycreativity
– Blurred visionBlurred vision– Disorganized speechDisorganized speech– HallucinationsHallucinations
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Sleep ActivitiesSleep Activities
• Am I Sleep Am I Sleep Deprived?Deprived?
• Sleep Myths QuizSleep Myths Quiz
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Am I Sleep Deprived? Am I Sleep Deprived? Yes/NoYes/No• I need an alarm clock to I need an alarm clock to
wake up for school.wake up for school.
• It’s a struggle to get out of It’s a struggle to get out of bed in the morning.bed in the morning.
• I hit the snooze bar several I hit the snooze bar several times to get more sleep.times to get more sleep.
• I feel tired, irritable and I feel tired, irritable and stressed out during the stressed out during the week.week.
• I have trouble concentrating I have trouble concentrating and remembering.and remembering.
• I feel slow with critical I feel slow with critical thinking, problem solving thinking, problem solving and being creative.and being creative.
• I often fall asleep in boring I often fall asleep in boring classes or warm rooms.classes or warm rooms.
• I often fall asleep within 5 I often fall asleep within 5 minutes of getting into bed.minutes of getting into bed.
• I often feel drowsy while I often feel drowsy while driving.driving.
• I often sleep extra hours on I often sleep extra hours on weekend mornings.weekend mornings.
• I often need a nap when I I often need a nap when I get home from school.get home from school.
• I have pink circles around or I have pink circles around or dark circles under my eyes.dark circles under my eyes.
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Am I Sleep Deprived? Am I Sleep Deprived? Yes/NoYes/No• An answer of “yes” to An answer of “yes” to
three or more of the three or more of the previous questions previous questions indicates sleep indicates sleep deprivation.deprivation.
• You can easily You can easily improve your mood, improve your mood, performance and performance and health by getting health by getting more sleepmore sleep!!
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Closure
•How has sleep deprivation affected your life? Which activities contribute most to your sleep deprivation?