Unit 5 States Of Consciousness Flashcards
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 (except for minor twitches) but other body systems are active.
Alpha waves
The relatively slow brain waves of a relaxed, awake state
Sleep
Periodic, natural loss of consciousness – as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.
Hallucinations
False sensory experiences, such as seeing something in the absence of external visual stimulus.
Delta waves
The large, slow brain waves associated with deep sleep.
NREM sleep
Non-rapid eye movement sleep; encompasses all sleep stages except for REM sleep.
Consciousness
Our awareness of ourselves and our environment.
Insomnia
Recurring problems in falling or staying asleep.
Narcolepsy
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 repeated momentary awakenings.
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 two to three hours of falling asleep, and are seldom remembered.
Dream
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 line of a dream (as distinct from its latent, or hidden, content.
Latent content
According to Freud, the underlying meaning of a dream (as distinct fro. its manifest content).
REM rebound
The tendency for REM sleepto increase following REM sleep deprivation (created by repeated awakenings during REM sleep).
Hypnosis
A social interaction in which one person (the hypnotist) suggests to another (the subject) that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur.
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 control undesired symptoms and behaviors.
Dissociation
A split in consciousness, which allows some thoughts and behaviors to occur simultsneously with others.
Psychoactive drug
A chemical substance that alters perceptions and moods.
Tolerance
The diminishing effect with regular use of the same dose of a drug, requiring the user to take larger and larger doses before experiencing the drug’s effect.
Withdrawal
The discomfort and distress that follow discontinuing tge use of an addictive drug.
Physical depenence
A physiological need for a drug, marked by unpleasant withdrawal symptoms when tge drug is discontinued.
Psychological dependence
A psychological need to use a drug, such as to relieve negative emotions.