7 min read
This AP Psychology study guide covers circadian rhythms (including the SCN and melatonin), the evolutionary reasons for sleep, and the sleep cycle (NREM stages, REM sleep, brain waves). It also discusses sleep disorders like insomnia, narcolepsy, sleep apnea, and night terrors, as well as dream theories (Freud's manifest and latent content) and exam tips.
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Question 1 of 16
What is the circadian rhythm? ⏰
A 12-hour cycle regulating only sleep patterns
A 24-hour cycle regulating sleep-wake patterns, body temperature, and hormone release
A cycle that only affects melatonin production
A random pattern of sleep and wakefulness