Sleeping 1 Target Goal Students will be able

Sleeping 1

Target Goal: ØStudents will be able to describe the sleep cycle and understand processes that impact sleep. 2

Waking Consciousness Ø Demo- You tube link Ø http: //www. youtube. com/watch? v=Ahg 6 qc goay 4&safety_mode=true&persist_safety_ mode=1 Ø Selective Attention ? Ø Inattentional Blindness? 3

EEG Waves of Wakefulness Awake, nonattentive 1 second Alpha waves Awake, attentive 1 second Beta waves 4

How Long is a day? Industrial World 24 hours Body ‘s Circadian Clock 24 hours 18 min 5

Circadian Rhythm Ø Any rhythmic change that continues at close to a 24 -hour cycle in the absence of 24 -hour cues l body temperature l cortisol secretion l sleep and wakefulness - Suprachiasmatic Nucleus 6

How do I fall asleep? Ø Step one- Circadian Clock influenced by SCN =Suprachiasmatic Nucleus Ø Step Two. Ventrolateral Preoptic Nucleus ( sleep master switch) turns off Brain arousal system ( reticular formation) 7

How do I fall asleep cont… Step Three- Pons directs neurochemicals ( GABA) to regulate sleep Ø Step Four- Circadian Clock regulates body temp Ø Decrease at sleep, increase at wake Ø 8

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Theta- The 10

Scary- Sleep Spindles 11

Demon- Delta 12

Sees Dead- Slow Delta 13

Bodies- Beta … Rapid Eye Movement 14

How much sleep do I need? Children: Ø Newborns- 17 hrs sleep ( 50% in REM) Ø 4 Year olds- 10 hrs ( 25 -30% in REM) Ø As we age… Ø Adolescents- 10 hours a day- Later clocks Ø Adults( by age 20) 7 -8 hours 20% or less in REM Ø 15

Can I “cheat” sleep? Effects on Body: Ø Minimal effect on Heart rate, blood pressure, hormone secretions Ø Impact Immune function ( T- cell count) Ø Ø Effects on Brain: Irritability, Unhappiness Ø Lower concentration on mundane tasks Ø Ø Hallucinations 16

What are the major sleep disorders ? 17

Somnambulism 18

Nightmares 19

Night Terrors 20

Narcolepsy 21

Sleep Apnea 22

Individual Differences in Sleep Drive Nonsomniacs - sleep far less than most, but do not feel tired during the day Ø Insomniacs - has a normal desire for sleep, but is unable to and feels tired during the day Ø 23

Teens and Sleep Cycles Sleep Survey Results Ø http: //www. pbs. org/wgbh/pages/frontline/vi deo/flv/generic. html? s=frol 02 p 392&continu ous=1 Ø (Frontline-Teens and sleep) 24