sleep - Sleeping and Dreaming 1 Electroencephalogram (EEG)...

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1 Sleeping and Dreaming
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2 Electroencephalogram (EEG) Electrodes placed on the scalp provide a gross record of the electrical activity of the brain EEG recordings are a rough index of psychological states
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3 EEG Waves of Wakefulness Awake, but non- attentive - large, regular alpha waves 1 second Alpha waves Awake, nonattentive 1 second Beta waves Awake, attentive Awake and attentive - low amplitude, fast, irregular beta waves
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4 Stages of Sleep Sleep stage 1 - brief transition stage when first falling asleep Stages 2 through 4 (slow- wave sleep) - successively deeper stages of sleep Characterized by an increasing percentage of slow, irregular, high- amplitude delta waves Delta waves Sleep stage 1 1 second Sleep stage 4 Sleep stage 2 Spindlers (bursts of activity)
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5 Stages of Sleep Upon reaching stage 4 and after about 80 to 100 minutes of total sleep time, sleep lightens, returns through stages 3 and 2 REM sleep emerges, characterized by EEG patterns that
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This note was uploaded on 01/12/2011 for the course PSY270 d54633 taught by Professor Hall during the Spring '05 term at University of Phoenix.

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sleep - Sleeping and Dreaming 1 Electroencephalogram (EEG)...

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