Sleep Vocabulary

Definition: Type of light from many digital devices, such as phones, tablets, televisions, and computers, that produces large amounts of energy.

• Blue Light

• Melatonin

• Sleep-wake Cycle

• Sleep Deficit

Definition: Fatigue that people feel after changing time zones when they travel.

• Sleep-Wake Cycle

• Blue Light

• Jet Lag

• Sleep Deficit

Definition: Naturally occurring physical, behavioral, and mental changes in the body that typically follow the 24-hour cycle of the sun.

• Melatonin

• Circadian Rhythms

• Blue Light

• Sleep Deficit

Definition: Hormone that increases feelings of relaxation and sleepiness and signals that it is time to go to sleep.

• Jet Lag

• Blue Light

• Sleep-Wake Cycle

• Melatonin

Definition: Pattern of sleeping in a 24-hour period.

• Sleep-Wake Cycle

• Blue Light

• Sleep Deficit

• Sleep Deprived

Definition: People who can function well on less sleep than other people.

• Sleep Deficit

• Short Sleepers

• Jet Lag

• REM Sleep

Definition: Condition that occurs when people frequently get less sleep than they should.

• Sleep Deficit

• Melatonin

• Circadian Rhythms

• Short Sleepers

Definition: Term used to describe a person who gets inadequate amounts of sleep.

• Sleep-Wake Cycle

• Jet Lag

• Sleep Deficit

• Sleep Deprived

Definition: Term for sleep disorders that occur when people are partially, but not completely, awoken from sleep.

• Insomnia

• Parasomnia

• Narcolepsy

• Delayed Sleep Phase Syndrome (DSPS)

Definition: Disorder that affects the brain’s ability to control the sleep-wake cycle.

• Delayed Sleep Phase Syndrome (DSPS)

• Parasomnia

• Insomnia

• Narcolepsy