Stages of Sleep - Fast, irregular EEG patterns Associated...

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Stages of Sleep There are 4 stages of sleep Stage 1: Small, irregular brainwaves produced in light sleep (people may or may not say they were asleep) Hypnic Jerk: Reflex muscle contraction Stage 2: Deeper sleep Sleep spindles (bursts of distinctive brain-wave activity) appear Stage 3: Deeper sleep Delta waves (very large and slow) appear Stage 4: Deepest level of normal sleep Almost purely Delta waves Two Basic Kinds of Sleep Rapid Eye Movements (REM):
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Unformatted text preview: Fast, irregular EEG patterns Associated with dreaming Sleep is very light Body is very still during REM sleep Lack of muscle paralysis during REM sleep is called REM Behavioral Disorder Non-REM (NREM) Sleep Occurs during stages 1, 2, 3, and 4 No rapid eye movement occurs Seems to help us recover from daily fatigue Dream free almost 90% of the time EEG patterns return to Stage 1...
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Stages of Sleep - Fast, irregular EEG patterns Associated...

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