Sleep and Dreams - AP Psychology

Front

What is the average duration of a sleep cycle during a full night’s sleep?

Back

90 minutes

Front

Define narcolepsy.

Back

A chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep.

Front

What is circadian rhythm?

Back

A natural, internal process that regulates the sleep-wake cycle and other bodily functions over a 24-hour period.

Front

Who proposed the dream theory that suggests dreams are expressions of wish fulfillment?

Back

Sigmund Freud

Front

What does the activation synthesis theory of dreaming propose?

Back

Dreams are the mind's attempt to make sense of random neural activity in the brain while one sleeps.

Front

What are the stages of sleep?

Back

There are five stages of sleep: NREM Stage 1, NREM Stage 2, NREM Stage 3, NREM Stage 4, and REM sleep.

Front

What is REM sleep?

Back

Rapid Eye Movement sleep, a stage of sleep characterized by rapid movement of the eyes, increased brain activity, and vivid dreams.

Front

What is the role of melatonin in sleep?

Back

Melatonin is a hormone that regulates sleep-wake cycles and is produced in response to darkness.

Front

What is sleep apnea?

Back

A sleep disorder characterized by pauses in breathing or shallow breaths during sleep.

Front

What is the difference between REM and NREM sleep?

Back

REM sleep is associated with dreaming and increased brain activity, while NREM sleep is a deeper, restorative sleep without dreams.