an assertion that attempts to appear scientific but is not really based on science
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biological rhythms
periodic physiological fluctuations
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circadian rhythms
Biological rhythms that occur approximately every 24 hours
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ultradian rhythms
biological rhythms that occur more than once each day
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infradian rhythms
biological rhythms that occur once a month or once a season
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William Dement
sleep researcher who coined the term rapid eye movement (REM)
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melatonin
Hormone that helps regulate daily biological rhythms
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EEG
machine that amplifies and records waves of electrical activity as they sweep across the brains surface =.
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REM SLEEP
A recurring sleep stage during which vivid dreams commonly occur.
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insomnia
recurring problems in falling or staying asleep
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sleep apnea
a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings
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narcolepsy
A sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times.
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somnambulism
Sleepwalking, which usually starts in the deeper stages of N-REM sleep. The sleepwalker can walk and talk and is able to see but rarely has any memory of the event.
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night terrors
Sleep-related problem characterized by high arousal and an appearance of being terrified; unlike nightmares, they occur during NREM 3 sleep, occur within two or three hours of falling asleep, and are seldom remembered.
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dual processing
the principle that information is often processed on separate conscious and unconscious tracks at the same time
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hypnosis
social interaction in which a hypnotist makes suggestions about perceptions, feelings, thoughts or behaviors and those suggestions are followed.
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social influence theory
Theory that powerful social influences can produce a state of hypnosis
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divided consciousness
theory that during hypnosis our consciousness splits so that one aspect of consciousness is not aware of the role other parts are playing
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Ernest Hilgard
pioneering hypnosis researcher and advocate of the divided consciousness theory of hypnosis
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posthypnotic suggestion
hypnotic suggestion that the subject will carry out after the hypnosis session has ended
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placebo
an inactive substance or condition that is sometimes given to those in a control for confounding variables