Chapter 5 - Chapter 5 Consciousness Insomnia is the most...

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Chapter 5: Consciousness Insomnia is the most common sleep disorder Hypnotized people are aware of their surroundings Recurring dreams are common Alcoholism has a genetic component to it What is sleep? brain is still active minimally aware of external events altered state of consciousness must have come purpose Effects of chronic sleep deprivation increased negative mood decreased cognitive performance attention lapses, reduced short-term memory microsleeps – brief, unintended sleep episodes Research Method Point: Electroencephalogram(EEG) record of electroactivity awake & attentive: low amplitude, fast, irregular beta waves awake but non-attentive: large, regular alpha waves 5 stages of sleep 1: Theta waves – breif transition stage when first falling asleep 2 to 4 (slow-wave sleep) – successively deeper stages of sleep characterized by an increasing percentage of slow, irregular, high-amplitude delta waves
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Chapter 5 - Chapter 5 Consciousness Insomnia is the most...

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