mental awareness of sensations, perceptions, memories, and feelings.
a state of normal, alert awareness.
altered state of consciousness
a condition of awareness distinctly different in quality or pattern from waking consciousness.
any repeating cycle of biological activity, such as sleep and waking cycles or changes in body temperature.
a brief shift in brain wave patterns to those of sleep.
being prevented from getting desired or needed amounts of sleep.
small, fast brain waves associated with being awake and alert.
natural sleep-wake cycle.
large, slow brain waves associated with relaxation immediately before sleep.
large, slow brain waves that occur in deeper sleep (levels 3 and 4).
rapid eye movement (REM)
swift eye movements during sleep, associated with dreaming.
levels of sleep identified by brain wave patterns and behavioral changes.
non-rapid eye movement sleep
sleep characteristic of stages 2, 3, 4; usually dream-free.
can't fall asleep, but can stay asleep.
can't stay asleep.
constant waking up and falling asleep throughout the night.
speaking during non-REM sleep.
bad dream that happens during REM sleep.
a state of panic during nREM sleep.
sudden, irresistible sleep attacks caused by emotional stimulation.
stops breathing during sleep... up to 10 times per night... causes snoring.
sudden infant death syndrome (SIDS)
sudden, unexplained death of a seemingly healthy infant.
the plot of a dream, what you tell people.
the hidden meaning behind a dream.
the occurrence of extra REM sleep following REM sleep deprivation.
Freudian theory, any theory of behavior that emphasizes internal conflicts, motives, and unconscious forces.
Hobson & McCarley, an attempt to explain how dream content is affected by motor commands in the brain that occur during sleep but are not carried out.
an altered state of consciousness characterized by narrowed attention and increased suggestibility.
a substance capable of altering attention, memory, judgment, time sense, self-control, mood, or perception.
a substance that increases activity in the body and nervous system (ex. nicotine/tobacco, caffeine, amphetamines, etc.).
a substance that decreases activity in the body and nervous system.
addiction; dependence that is based on emotional or psychological needs.
physical illness and discomfort following the withdrawal of a drug.
a reduction in the body's response to a drug... causes the druggie to increase the dosage.
a substance that alters or distorts sensory impressions.