Stages of Sleep - – Fast irregular EEG patterns –...

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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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This note was uploaded on 11/14/2011 for the course PSYCHOLOGY ps 101 taught by Professor - during the Spring '10 term at Montgomery.

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Stages of Sleep - – Fast irregular EEG patterns –...

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