Vocabulary
This means being aware of what is happening around you.
What is consciousness?
The lightest stage of sleep where hypnic jerks may happen.
What is Stage N1?
This state happens when you are fully absorbed in an activity, like being “in the zone.”
What is flow state?
Two sleep problems that happen during NREM sleep.
What are sleepwalking and night terrors?
Drugs that speed up the brain and body, like caffeine.
What are stimulants?
Focusing your mind to relax and calm yourself.
What is meditation?
This stage includes sleep spindles.
What is Stage N2?
Getting extra REM sleep after missing sleep earlier.
What is REM rebound?
A sudden muscle jerk as you fall asleep.
What is a hypnic jerk?
Drugs that slow down the brain and body, like alcohol.
What are depressants?
A state where you are very relaxed and open to suggestions.
What is hypnosis?
The stage where most dreaming occurs and your body cannot move.
What is REM sleep?
This theory says dreams are random brain signals turned into stories.
What is the activation-synthesis theory?
Trouble falling or staying asleep.
What is insomnia?
Drugs that change what you see, hear, or feel.
What are hallucinogens?
Your body’s daily sleep–wake cycle controlled by the brain.
What is circadian rhythm?
Name the two deepest stages where the body repairs itself and releases growth hormones.
What are N3 and N4 (deep sleep stages)?
This theory says dreams use bits of recent memories to make meaning.
What is the activation-information-mode model?
Sudden sleep attacks during the day.
What is narcolepsy?
When your body physically needs a drug to function normally.
What is physical dependence?
When your mind feels like it needs a drug to feel okay emotionally.
What is psychological dependence?
These brain waves occur in the deepest sleep.
What are delta waves?
Name two reasons scientists think we dream (from either theory).
What are random brain activity OR organizing memories/processing information?
This part of the brain controls the sleep–wake cycle.
What is the hypothalamus?
The main chemical in marijuana.
What is THC?