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