Vocabulary
Our 24-hour "biological clock"
Circadian rhythm
A calming process that is meant to ground you and heighten your awareness.
Meditation
In this stage of sleep, you experience vivid dreams and your deepest sleep.
REM
A substance that increases your alertness or attention, like caffeine or Adderall.
A stimulant
What is a common scan to include in a sleep study, since it measures brain waves?
An EEG
By occupying the receptor site, these prevent neurotransmitters, hormones, or other drugs from attaching and producing an effect.
Antagonists
A common perceptual phenomenon where a person fails to notice a major change in their visual environment.
Change blindness
In which sleep stage are abnormal events like bedwetting more likely to occur?
Stage three
A substance that alters your perception and can cause you to perceive things that aren't real.
Hallucinogens
A term to describe general difficulty sleeping or staying asleep.
Insomnia
This happens when avoiding reality replaces active problem-solving
Escapism
This term refers to when your consciousness is impacted by things like sleep, injuries, or substances.
Altered state
In what stage of sleep does your pulse slow, and you "nod off"
Stage one
This substance does not neatly fit into a traditional drug category, since it has depressant, stimulant, and mild hallucinogenic effects.
Cannabis
When you drift into REM at various times throughout the day, it is indicative of this disorder.
Narcolepsy
This type of substance activates a cellular receptor to produce the maximum possible biological response. An example is morphine, which attaches to an opioid receptor.
An agonist
This happens when your senses process information below the level of your conscious awareness
Subliminal perception
What does REM stand for?
Rapid eye movement
A category that includes alcohol and benzodiazepines, these suppress central nervous system activities.
Depressants
A sleep disorder characterized by a disruption in breathing.
Sleep apnea
This theory suggests that dreams are the brain's attempt to make sense of random neural activity
Activation-synthesis theory
A cognitive activity that happens without conscious control, intent, or effort, requiring very few attentional resources
Automatic processing
How long is a typical full sleep cycle?
90 minutes
Substances that suppress your feeling of pain, like ibuprofen or morphine.
Analgesics
These types of disorder happen when your internal 24-hour biological clock falls out of sync with your external environment.
Circadian rhythm sleep disorder