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20 Cards in this Set

  • Front
  • Back
consciousness
mental awareness of sensations, perceptions, memories, and feelings.
altered state of consciousness (ASC)
a condition of awareness distinctly different in quality or pattern from waking consciousness.
biological rhythm
any repeating cycle of biological activity, such as sleep and waking cycles or changes in body temperature.
microsleep
a brief shift in brain-wave patterns to those of sleep
sleep deprivation
being prevented from getting desired or needed amounts of sleep
sleep-deprivation psychosis
a major disruption of mental and emotional functioning brought about by sleep loss.
sleep hormone
a sleep-promotion substance found in the brain and spinal cord.
electroencephalograph (EEG)
a device designed to detect, amplify, and record electrical activity in the brain.
beta waves
small fast brain waves associated with being awake and alert.
alpha waves
large, slow brain waves associated with relaxation and falling asleep.
sleep stages
levels of sleep identified by brain-wave patterns and behavioral changes
light sleep
stage 1 sleep, marked by small, irregular brain waves and some alpha waves.
sleep spindles
distinctive bursts of brainwave activity that indicate a person is asleep
delta waves
large, slow brain waves that occur in deeper sleep.
deep sleep
stage 4 sleep; the deepest form of normal sleep.
rapid eye movements (REMs)
swift eye movements during sleep
REM sleep
sleep marked by rapid eye movements and a return to stage 1 EEG patterns.
NREM sleep
non-rapid eye movement sleep characteristic of stages 2, 3, and 4.
insomnia
difficulty in getting to sleep or staying asleep.
stimulus control
linking a particular response with specific stimuli.