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Chapter 7 AP Psychology Vocabulary


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Biological Rhythms
Periodic physiological fluctuations.
Circadian Rhythm
The biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle.
REM Sleep
Rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur. Also known as paradoxical sleep, because the muscles are relaxed but other body systems are active.
Alpha Waves
The relatively slow brain waves of a relaxed, awake state.
Periodic, natural, reversible loss of consciousness- as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.
False sensory experiences, such as seeing something in the absence of an external visual stimulus.
Delta Waves
The large, slow brain waves associated with deep sleep.
Recurring problems in falling or staying asleep.
A sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times.
Sleep Apnea
A sleep disorder characterized by temporary cessations of breathing during sleep and consequent momentary reawakenings.
Night Terrors
A sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during Stage 4 sleep, within 2 or 3 hours of falling asleep, and are seldom remembered.
A sequence of images, emotions, and thoughts passing through a sleeping person's mind. Dreams are notable for their hallucinatory imagery discontinuities, and incongruities, and for the dreamer's delusional acceptance of the content and later difficulties remembering it.
Manifest Content
According to Freud, the remembered story of a dream (as distinct from its latent content).
Latent Content
According to Freud, the underlying meaning of a dream (as distinct from its manifest content). Freud believed that a dream's latent content functions as a safety valve.
REM Rebound
The tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakenings during REM sleep).
A social interaction in which one person suggests to another that certain perceptions, feelings, thoughts or behaviors will spontaneously occur.
Posthypnotic amnesia
Supposed inability to recall what one experienced during hypnosis; induced by the hypnotist's suggestion.
Posthypnotic Suggestion
A suggestion, made during a hypnosis session, to be carried out after the subject is no longer hypnotized; used by some clinicians to help control undesired symptoms and behaviors.
A split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others.

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