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Chapter 7
Understanding Psychology by Richard A. Kasschau, Ph.D.
Question | Answer |
---|---|
consciousness | a state of awareness, including a person's feelings, sensations, ideas, and perceptions |
REM sleep | a stage of sleep characterized by rapid eye movements, a high level of brain activity, a deep relaxation of the muscles, and dreaming |
circadian rhythm | the rhythm of activity and inactivity lasting approximately one day |
insomnia | the failure to get enough sleep at night in order to feel rested the next day |
sleep apnea | a sleep disorder in which a person has trouble breathing while asleep |
narcolepsy | a condition characterized by suddenly falling asleep or feeling very sleepy during the day |
nightmares | unpleasant dreams |
night terrors | sleep disruptions that occur during Stage IV of sleep, involving screaming, panic, or confusion |
sleepwalking | walking or carrying out behaviors while asleep |
hypnosis | a state of consciousness resulting from a narrowed focus of attention and characterized by heightened suggestibility |
posthypnotic suggestion | a suggestion made during hypnosis that influences the participant's behavior afterward |
biofeedback | the process of learning to control bodily states with the help of machines monitoring the states to be controlled |
meditation | the focusing of attention to clear one's mind and produce relaxation |
psychoactive drugs | chemicals that affect the nervous system and result in altered consciousness |
marijuana | the dried leaves and flowers of Indian hemp (Cannabis sativa) that produce an altered state of consciousness when smoked or ingested |
hallucinations | perceptions that have no direct external cause |
hallucinogens | drugs that often produce hallucinations |
LSD | a potent psychedelic drug that produces distortions of perception and thought |