Sleep Vocabulary

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

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

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

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

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

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

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

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

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

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