Sleep notes - Slide 1 _ _ Sleep and biological rhythms _ _...

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Slide 1 Sleep and biological rhythms ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 2 Sleep A behavior characterized by a change in consciousness and marked by a set of particular behaviors. – Brain and body rest – Brain engages in several activities ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 3 Studying sleep • Electroencephalogram (EEG) • Electromyogram (EMG) • Electro-oculogram (EOG) ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________
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Slide 4 Brain wave activity • Wakefulness – Alpha waves – regular, medium frequency waves – Beta waves – irregular, low amplitude waves ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 5 Brain wave activity during sleep • Stage 1 sleep (~10 minutes) – Theta waves – lower frequency • Stage 2 sleep (~15 minutes) – Theta waves continue, marked by bursts of: Sleep spindles K-complexes ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 6 Brain wave activity during sleep • Stage 3 sleep (~15-20 minutes) – Beginning of slow-wave sleep – Combination of theta and delta activity • Delta waves ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________
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Slide 7 Brain wave activity during sleep • Stage 4 sleep (~45 minutes) – > 50% delta waves • Stages 1-4 are non-REM sleep ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 8 Brain wave activity during sleep • REM sleep (~20-30 minutes) – Characterized by R apid E ye M ovements – Brain waves become desynchronized – Complete lack of muscle tone – Easy waking from REM sleep
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Sleep notes - Slide 1 _ _ Sleep and biological rhythms _ _...

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