Sleep 1
A periodic, natural loss of consciousness – distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.
Sleep
A sleep disorder characterized by uncontrollable sleep attacks
Narcolepsy
A chemical substance that alters perceptions and moods
Psychoactive Drug
False sensory experiences, such as seeing something in the absence of an external visual stimulus
Hallucinations
Our subjective awareness of ourselves and our environment
Consciousness
Bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep
Hypnagogic Sensations
A sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings
Sleep Apnea
A category of drugs that reduce neural activity and slow body functions
Depressants
A category of drugs that excite neural activity and speed up body functions
Stimulant
A social interaction in which one person suggest to another that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur
A recurring sleep stage during which vivid dreams commonly occur
REM Sleep
A sequence of images, emotions, and thoughts passing through a sleeping person's mind
Dreams
psychedelic drugs that distort perceptions and evoke sensory images in the absence of sensory input
Hallucinogens
The diminishing effect with regular use of the same dose of a drug, requiring the user to take larger and larger doses before experiencing the drug's effect
Tolerance
A split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others
Dissociation
A sleep disorder characterized by recurring problems in falling or staying asleep
Insomnia
Our biological clock; regular bodily rhythms that occur on a 24 cycle
Circadian Rhythm
The discomfort and distress that follow discontinuing an addictive drug or behavior
Withdrawal
The tendency for REM sleep to increase following REM sleep deprivation
REM Rebound
Encompasses all sleep stages except for REM sleep. Ranging from light sleep to deep sleep.
Non-REM Sleep