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Chapter 7

Understanding Psychology by Richard A. Kasschau, Ph.D.

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
Created by: yojava