Physiology of Sleep

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Phase-4 nonREM• Deepest sleep; takes about 30-40 mins.• δ (theta) waves predominate• Most reflexes are intact; muscle tone slightlydecreased• <strong>Sleep</strong>-walking; sleep-talking; snoring andbedwetting generally occurs at this stage.
<strong>Sleep</strong> Stages-EEG
Page 2 and 3: Reticular Formation (Reticular acti
Page 4 and 5: Sleep• Loss of wakefulness• A f
Page 7: Sleep centers2. *“Medullary synch
Page 10 and 11: Why do we sleep?
Page 12 and 13: Sleep-Wake Cycle: Biological Rythms
Page 15: Slow-Wave (nonREM) Sleep• Entranc
Page 18 and 19: Phase-1 nonREM• Transition period
Page 21: Phase-3 nonREM• Half-way deep sle
Page 25 and 26: REM Sleep• 5-30 minutes with 90 m
Page 27 and 28: Possible causes of REM Sleep• ACh
Page 30 and 31: Typical sleep phases in night sleep
Page 33 and 34: Cortical activity during sleep
Page 35 and 36: Waking up• It is hard to wake up
Page 37 and 38: Physiological effects of sleep• B
Page 39 and 40: Sleep across life span
Page 41 and 42: Sleep deprivation• Prolonged wake
Page 43 and 44: Sleep disorders• Parasomnias• S
Page 45: Quote:For you to sleep well at nigh

Physiology of Sleep

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