chapter 4 Flashcards
Conscious
Personal Awareness of mental activities, internal sensations, and the external environment (P. 136)
Circadian Rhythm
A cycle or rhythm that is roughly 24 hours long: the cyclical daily fluctuations in biological and psychological process (P. 138)
Suprachiasmatic Nucleus (SCN)
A cluster of neurons in the hypothalamus in the brain that governs the timing of circadian rhythms (P. 138)
Melatonin
A hormone manufactured by the pineal gland that produces sleepiness (P. 138)
Electroencephalograph
An instrument that uses electrodes placed on the scalp to measure and record brains’ electrical activity (P. 140)
Electroencephalogram
The graphic record of brain activity produced by an electroencephalograph (P. 140)
REM Sleep
Type of sleep during which rapid eye movements (REM) and dreaming usually occur and voluntary muscle activity is suppressed; also called active sleep or paradoxical sleep (P. 141)
NREM Sleep
Quiet, typically dreamless sleep in which rapid eye movements are absent divided into four stages; also called quiet sleep (P. 141)
Beta Brain Waves
Brain-wave pattern associated with alert wakefulness (P. 141)
Alpha Brain Waves
Brain-wave pattern associated with relaxed wakefulness and drowsiness (P. 141)
Hypnagogic Hallucinations
Vivid sensory phenomena that occur during the onset of sleep (P. 141)
Sleep Spindles
Short bursts of brain activity that characterizes stage 2 NREM (P. 143)
K Complex
Single but large high-voltage spike of brain activity that characterizes stage 2 NREM sleep (P. 143)
Sleep Paralysis
A temporary condition in which a person is unable to move upon awakening in the morning or during the night (P. 144)
REM Rebound
A phenomenon in which a person who is deprived of REM sleep greatly increases the amount of time spent in REM sleep at the first opportunity to sleep uninterrupted (P. 146)
Sleep Thinking
Vague, bland, thought-like ruminations about real-life events that typically occur during NREM sleep; also called sleep mentation (P. 147)
Dream
An unfolding sequence of thoughts, perceptions, and emotions that typically occurs during REM sleep and is experienced as a series of real-life events (P. 147)
Nightmare
A vivid and frightening or unpleasant anxiety dream that occurs during REM sleep (P. 150)
Manifest Content
In Freud’s psychoanalytic theory, the elements of a dream that are consciously experienced and remembered by the dreamer (P. 151)
Latent Content
In Freud’s psychoanalytic theory, the unconscious wishes, thoughts, and urges that are concealed in the manifest content of a dream (P. 151)
Activation-Synthesis Model of Dreaming
The theory that brain activity during sleep produces dream images (activation), which are combined by the brain into a dream story (synthesis) (P. 153)
Sleep Disorders
Serious and consistent sleep disturbances that interfere with daytime functioning and cause subjective distress (P. 153)
Dyssomnias
A category of sleep disorders involving disruptions in the amount, quality, or timing of sleep; includes insomnia, obstructive sleep apnea, and narcolepsy (P. 153)
Parasomnias
A category of sleep disorders characterized by arousal or activation during sleep or sleep transitions; includes sleepwalking, sleep terrors, sleep-sex, sleep-related eating disorder, and REM sleep behavior disorder (P. 153)
Insomnia
(DYSSOMNIA) A condition in which a person regularly experiences an inability to fall asleep, to stay asleep, or to feel adequately rested by sleep (P. 153)
Obstructive Sleep Apnea
(DYSSOMNIA) A sleep disorder in which the person repeatedly stops breathing during sleep (P. 155)
Narcolepsy
(DYSSOMNIA) A sleep disorder characterized by excessive daytime sleepiness and brief lapses into sleep throughout the day (P. 155)
Cataplexy
A sudden loss of voluntary muscle strength and control that is usually triggered by an intense motion (P. 155)
Hypocretins
A special class of neurotransmitters produced during the daytime to maintain a steady state of wakefulness (P. 156)
Sleep Terrors (Nigh Terrors)
(PARASOMNIA) A sleep disturbance characterized by an episode of increased physiological arousal, intense fear and panic, frightening hallucinations, and no recall of the episode the next morning; typically occurs during stage 3 or stage 4 NREM (P. 157)
Sleep-sex (Sexsomnia)
(PARASOMNIA) A sleep disorder involving abnormal sexual behaviors ad experiences during sleep (P. 157)
Sleep-Related Eating Disorder (SRED)
A sleep disorder in which the sleeper will sleepwalk, and eat compulsively (P. 158)
REM Sleep Behavior Disorder (RBD)
A sleep disorder characterized by the brain’s failure to suppress voluntary actions during REM sleep resulting in the sleeper verbally and physically responding to the dream story (P. 158)
Hypnosis
A cooperative social interaction in which the hypnotized person responds to the hypnotist’s suggestions with changes in perception, memory, and behavior (P. 159)
Posthypnotic Suggestion
A suggestion made during hypnosis that the person should carry out a specific instruction following the hypnotic session (P. 160)
Posthypnotic Amnesia
The inability to recall specific information because of a hypnotic suggestion (P. 160)
Hypermnesia
The supposed enhancement of a person’s memory for past events through a hypnotic suggestion (P. 160)
Dissociation
The splitting of consciousness into two or more simultaneous streams of mental activity (P. 161)
Neodissociation Theory of Hypnosis
Theory proposed by Ernest Hilgard that explains hypnotic effects as being during to the splitting of consciousness into two simultaneous streams of mental activity, only one of which the hypnotic participant is consciously aware of during hypnosis (P. 161)
Hidden Observer
Hilgard’s term for the hidden, or dissociated, stream of mental activity that continues during hypnosis (P. 161)
Meditation
Any one of a number of sustained concentration techniques that focus attention and heighten awareness (P. 163)
Psychoactive Drugs
A drug that alters consciousness, perception, mood, and behavior (P. 165)
Physical Dependence
A condition in which a person has physically adapted to a drug so that he or she must take the drug regularly in order to avoid withdrawal symptoms (P. 165)
Drug Tolerance
A condition in which increasing amounts of physically addictive drug are needed to produce the original, desired effect (P. 165)
Withdrawal Symptoms
Unpleasant Physical reactions, combined with intense drug cravings, that occur when a person abstains from a drug on which he or she is physically dependent (P. 165)
Drug Rebound Effect
Withdrawal Symptoms that are the opposite of a physically addictive drug’s action (P. 165)
Drug Abuse
Recurrent drug use that reults in disruptions in academic, social, or occupational functioning or in legal or psychological problems (P. 166)
Depressants
A category of psychoactive drugs that depress or inhibit brain activity (P. 166)
Inhalants
Chemical substances that are inhaled to produce an alteration in consciousness (P. 169)
Barbiturates
A category of depressant drugs that reduce anxiety and produce sleepiness (P. 169)