Terms in this set (17)
our awareness of ourselves and our environment.
the focusing of conscious awareness on a particular stimulus.
failing to see visible objects when our attention is directed elsewhere.
the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle.
rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur. Also known as paradoxical sleep, because the muscles are relaxed (except for minor twitches) but other body systems are active.
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.
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.
a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings.
a sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during Stage 4 sleep, within two or three 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.
according to Freud, the remembered story line of a dream (as distinct from its latent, or hidden, content).
according to Freud, the underlying meaning of a dream (as distinct from its manifest content).
the tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakenings during REM sleep).