Presentation on theme: "Do Now When you are sleeping, do you: 1. Awaken easily at any noise 2. Fall asleep to music or TV 3. Sleep deeply through anything 4. Use the computer."— Presentation transcript:
1Do NowWhen you are sleeping, do you: 1. Awaken easily at any noise 2. Fall asleep to music or TV 3. Sleep deeply through anything 4. Use the computer or play video games an hour or less before going to sleep?
2Do NowReading: Sleep Deprivation May be Ruining Teen Health: (American Psychological Association)
3Sleep JournalYou will record your sleep patterns over the next two weeks.Starting tonight – write down:Activities before bedComputer/video game use before bedCaffeinated Drinks per dayTime go to bedTime fell asleepTime woke upAny night time awakenings.How did you feel the next day.
4States of Consciousness What are the key ideas in this unit?Levels of ConsciousnessSleep and DreamingSleep Disorders
5Many states of consciousness What is the difference between Conscious, Unconscious and Subconscious?Many states of consciousnessDaydreaming, dozing, deep sleep, awareness – all different aspects of consciousnessUnconscious – physically unable to awakenSubconscious – inner thoughts and feelings you are not totally aware of
6What is Unconsciousness? Physical loss of responsiveness to the environmentCauses: disease, trauma, anesthesiaConsciousness can be altered by: sleep, hypnosis, medication, meditation and injury
7What is a Coma? A Coma is a profound state of unconsciousness.A comatose person cannot be awakened, fails to respond normally to pain, light or sound, does not have sleep/wake cycles and does not initiate voluntary actions. (More than 6 days).The underlying cause of coma is bilateral damage to the Reticular Activating System in the midbrain which is important in regulating sleepComa can result from: stroke, trauma, intoxication, hypoxia or induced as a form of preserving higher brain function during healing process
8Glasgow Coma Scale Generally, brain injury is classified as: Severe, with GCS less than 8Moderate, GCSMinor, GCS greater than 13.
9What is Sleep? Your body’s own circadian rhythm – biological clock You don’t have to do anything to allow your normal sleep pattern to emerge…..it’s called a free running cycleWhen your parents brought you home from the hospital and trained you to sleep at night…that is called entrainmentWhen you have sleep deprivation – you will make up for it by sleeping more in REM sleep days later. This is called REM Rebound.
10What did we Learn? Many states of consciousness Unconscious – physically unable to awakenSubconscious –inner thoughts and feelings you are not totally aware ofA comatose personcannot be awakened, fails to respond normally to pain, light or sound
11The severity of a coma is measured by the Glasgow Coma Scale.Circadian rhythms areYour natural biological clockEntrainment isTraining your body when to sleepWhen you don’t get enough sleep it’s calledSleep DeprivationMaking up for lost sleep time by sleeping more for a few days is:REM Rebound
12Do Now: Reading Changing School Start Times Why do teens need more sleep?What is it like for a teen to be in school at 7 AM?What changes in their brains at this age to cause sleep changes?
13What exactly happens during sleep? You cycle through various stages when you are sleeping.ConsciousnessAwarenessResponsivenessPhysiological awakening
14How does our body know when to sleep? HypothalamusRegulates temperature, blood pressure, pulse, blood sugar, throughout the dayYour free running biological clock is 25 hours longCircadian rhythmsYour natural biological clock – during light/dark turns into 24Cycles all day and nightReticular FormationRAS (Reticular Activating System) – changes in wakefulness, arousal, attention, mood, energy levelNight shift work, jetlag disrupt circadian rhythms
15What is Sleep Deprivation Sleep Deprivation makes you drowsyUnable to concentrate, impairs memory and concentrationImpacts Immune SystemSleep time seems to decrease from about 16 to 18 hours for a newborn to 7 or 8 for an adult
17Types of Sleep: Non REMNREM is the first type of sleep you enter when you first nod off.Most of our time asleep is spent here, making up for 75% of an adults sleep.NREM is split into 4 stages, with each stage taking you deeper and deeper into sleep.
18First 4 Sleep Stages – NREM (Non Rem) Twilight Sleep: sensation of falling, peaceful, hazy, Melatonin triggeredFail to immediately respond to outside stimuliStage 1: Sudden twitches and hynic jerks (myoclonus reactions)Lose most conscious awareness of the external environment.Stage 2: sleep spindles (bursts), lose all awareness of environmentStage 3: Slow wave sleep – sleep walking, bedwetting can be issuesStage 4: Heart beat drops, BP low, H.G.H secreted
20What happens after stages 1-4? You go backwards! Passing back through stages 3,2, and 1 – but THEN something else happens….You begin REM Sleep (Rapid Eye Movement)Every 90 minutes after falling asleep your eyes jerk back and forth in various directionsYour limbs become paralyzedB.P., heart rate increasesThrough the night you cycle through stages with REM increasing in length –then decreasing towards awakening.
21REM sleep in adult humans typically occupies 20–25% of total sleep about 90–120 minutes of a night's sleep.During a normal night of sleep, humans usually experience about four or five periods of REM sleep; they are quite short at the beginning of the night and longer toward the end.Many animals and some people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM.The relative amount of REM sleep varies considerably with age.A newborn baby spends more than 80% of total sleep time in REMDuring REM, the activity of the brain is quite similar to that during waking hours; for this reason, the REM-sleep stage may be called paradoxical sleepVividly recalled dreams mostly occur during REM sleep
28What are some Sleep Disorders Sleep apnea is a condition in which a person has episodes of blocked breathing during sleepInsomnia: inability to fall/maintain sleepNarcolepsy : a sleep disorder that causes excessive sleepiness and frequent daytime sleep attacksCataplexy: rare sleep disorder that causes immediate REM sleep when excited or emotionalRestless Leg Syndrome is a disorder in which there is an urge or need to move the legs to stop unpleasant sensation
30When do you have nightmares? Occur during REM Sleep – most dreams occur during this phaseDreams remembered from other stages are less emotional and sensibleLucid Dreaming: training to be aware of and direct one’s dreams to help cure people of nightmares.Incubus: Night Terrors – wake during REM – happens to young children often after disruption of sleep cycle, (holidays, guests, vacations, etc.)
31Sleep and Dreaming The theory of why we dream is a Construct. A Construct is to create something in your mind: such as a theory as a result of systematic thought
32What do dreams mean? Some popular theories Freud: “Royal road to the unconscious”“Manifest Content” – remembered parts“Latent Content” - underlying meaningMcCarley and Hobson: Activation Synthesis Theory: during dreams the pons generates bursts of action potentials to the brainYou try to create a story line out of it (synthesize)Origins of dreams are either psychological or physiological depending on what theory you followMost of your dreams happen between 4 and 7 am.
33What do I need to know about sleep? There are different phases of sleep from just being drowsy to awakening4 phases in non rem (NREM) and 4 in REM (rapid eye movement)REM is a very active period in your brain, but you are physically paralyzed.Teens need 9 plus hours a night for optimum health – but often don’t get itAdults need less as they ageDreams – most occur between 4-7 amTheories: repressed desires, spindle bursts in brain, reorganization of thoughtsDisorders: Isomnia, Narcolepsy, Night Terrors, Apnea, Restless Leg Syndrome.
34Tomorrow: Friday Dec. 9th 2011 Test on Sleep & ConsciousnessYou will NOT be able to use your notes…today you will create a study guide that you may use if you remember to bring it!Sleep Journals Due: Tomorrow at latestProjects Due: (Unless we already have an agreement), due latest by Friday.Vocabulary Worksheet: Work on today – hand in for extra 10 points on test for tomorrow !
35Things you need to knowDifference between consciousness, subconscious, unconsciousStage 1 or Twilight sleep – knee jerk reflex, Stage 2 – sleep talking, Stage 3 – sleep walkingOther terms for Sleep Walking, BedwettingDifference between NREM and REMTypes of Sleep DisordersCircadian Rhythm, Free Running CycleAverage need for sleep for adults – 8 ours, teens moreTerm for lack of sleepWhen do you dream?Content of Dreams? Manifest, (me) and Latent (underlying) (Freud)What part of your brain controls circadian rhythms? What part of your brain controls temperature, respiration while sleeping, (at other times too)Disorders of sleep common in children
36Sleep Day! You can wear pajama bottoms/sweats – appropriate please. Bring: pillow, blanket, yoga mat, sleeping bag, stuffed animal….you can drop it off here in the morning and pick up later if you like.iPod with headphones is okay – just play it low so you don’t bother anyone trying to sleep