PSY352SleepDisordersch16pt2.2per

PSY352SleepDisordersch16pt2.2per - PSY352 Abnormal...

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1 Sleep Disorders Chapter 16 Part 2 PSY352 Abnormal Psychology Dr. Bradbury Sleep • Most adults require 7-8 hours of sleep to function optimally. – Insufficient sleep results in lapses in attention, vigilance, and deterioration of performance… • Five stages of sleep: – Stage 1 (~5%): Transition from wakefulness to sleep (alpha waves predominate) – Stage 2 sleep (~50%) - sleep spindles (delta wave spikes in thalamus) – Stages 3-4 (10-20%): Deepest levels (slow wave sleep) – Rapid eye movement (REM ~20-25%): Dream sleep (w paralysis of most major muscles)
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2 Primary Sleep Disorders • Most problems are either inability to initiate or maintain sleep at night or excessive daytime sleepiness • Dyssomnias : Difficulties in getting to sleep, maintaining sleep, or complaints of excessive sleepiness during the day Primary Sleep Disorders (cont’d) • Dyssomnias : Disturbance in amount, quality, or timing of sleep: – Insomnia – Primary hypersomnia – Narcolepsy – Breathing related sleep disorders – Circadian rhythm sleep disorder – Dyssomnia not otherwise specified
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3 Primary Insomnia • Characterized by difficulty getting to sleep, maintaining sleep, or having nonrestorative sleep for at least one month, causing clinically significant distress in social, occupational, or other areas of functioning – Many people have undiagnosed sleep apnea – Causative factors: caffeine, alcohol, heavy meals, exercising 2 hours before bedtime, stress, intrusive/ racing
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PSY352SleepDisordersch16pt2.2per - PSY352 Abnormal...

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