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Sleep Terminology

Horizontales
A pattern of daily sleep-wake activity that reflect's a persons circadian rhythm.
Inducing drowsiness, like a lullaby.
Interruption of sleep that involves arousals and awakenings.
A dream with negative content that causes a person to wake up from sleep.
A test that uses sensors on the scalp to measure brain activity.
The body's 24 hour internal clock.
A feeling of a lack of mental or physical energy.
A substance or medication that induces drowsiness.
An amount of sleep that is less than recommended based on a person's health and age.
A state of decreased oxygen level.
Verticales
Excessive sleepiness during times when a person expects to be awake.
A factor involved in entrainment of a person's circadian rhythm to the 24 hour day-night cycle. Light is considered the most powerful of these.
Taking place during the night.
Temporary paralysis of most muscles of the body, occurs during REM sleep.
Staying asleep for the desired or planned amount of time after initially falling asleep.
The use of specific smells to affect aspects of physical or mental health.
A hormone produced in the body that helps to regulate circadian rhythm and sleep.
The state of feeling sleepy or drowsy.
Extremely slow or shallow breathing.
Often emitted by many LEDs and electronic devices, has impact on circadian rhythm.
An abrupt change from a deeper to a lighter stage of sleep.
Activity during the daytime.
A short sleep period.