Chapter 7 - States of Consciousness Flashcards
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 (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, reversible 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 an external visual stimulus
delta waves
The large, slow brain waves associated with deep sleep
insomnia
recurring problems in falling or staying sleep
narcolepsy
sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times
sleep apnea
The sleep disorder characterized by temporary cessation of breathing during sleep and repeated momentary awakenings
night terrors
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
dream
sequence of images, emotions, and thoughts passing through sleeping persons mind. Dreams are notable for their hallucinatory imagery, discontinuities, and incongruities, and for the dreamers delusional acceptance of the content and later difficulties remembering it
manifest content
according to Freud, the remembered storyline of the dream (as distinct from its latent, or hidden, content)
latent content
according to Freud, underlying meaning of a dream (as distinct from its manifest content). Freud believed that a dreams 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)
hypnosis
social interaction in which one person (the hypnotist) suggest to another (the subject) that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur
posthypnotic suggestion
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
dissociation
split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others
psychoactive drug
Chemical substance that alters perceptions and mood
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 drugs effect
withdrawal
The discomfort and distress that follow discontinuing the use of an addictive drug
physical dependence
physiological need for a drug, marked by unpleasant withdrawal symptoms when the drug is discontinued
psychological dependence
psychological need to use a drug, such as to relieve negative emotions
addiction
compulsive drug craving and use