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PSY105 ECPI
PSY105 CH04 KEY TERMS
| Term | Definition |
|---|---|
| PSY105 CH04 KEY TERMS | |
| alpha wave | type of relatively low frequency, relatively high amplitude brain wave that becomes synchronized; characteristic of the beginning of stage 1 sleep |
| biological rhythm | internal cycle of biological activity |
| cataplexy | lack of muscle tone or muscle weakness, and in some cases complete paralysis of the voluntary muscles |
| central sleep apnea | sleep disorder with periods of interrupted breathing due to a disruption in signals sent from the brain that regulate breathing |
| circadian rhythm | biological rhythm that occurs over approximately 24 hours |
| codeine | opiate with relatively low potency often prescribed for minor pain |
| cognitive-behavioral therapy | psychotherapy that focuses on cognitive processes and problem behaviors that is sometimes used to treat sleep disorders such as insomnia |
| collective unconscious | theoretical repository of information shared by all people across cultures, as described by Carl Jung |
| consciousness | awareness of internal and external stimuli |
| continuous positive airway pressure (CPAP) | device used to treat sleep apnea; includes a mask that fits over the sleeper’s nose and mouth, which is connected to a pump that pumps air into the person’s airways, forcing them to remain open |
| delta wave | type of low frequency, high amplitude brain wave characteristic of stage 3 and stage 4 sleep |
| depressant | drug that tends to suppress central nervous system activity |
| euphoric high | feelings of intense elation and pleasure from drug use |
| evolutionary psychology | discipline that studies how universal patterns of behavior and cognitive processes have evolved over time as a result of natural selection |
| hallucinogen | one of a class of drugs that results in profound alterations in sensory and perceptual experiences, often with vivid hallucinations |
| homeostasis | tendency to maintain a balance, or optimal level, within a biological system |
| hypnosis | state of extreme self-focus and attention in which minimal attention is given to external stimuli |
| insomnia | consistent difficulty in falling or staying asleep for at least three nights a week over a month’s time |
| jet lag | collection of symptoms brought on by travel from one time zone to another that results from the mismatch between our internal circadian cycles and our environment |
| K-complex | very high amplitude pattern of brain activity associated with stage 2 sleep that may occur in response to environmental stimuli |
| latent content | hidden meaning of a dream, per Sigmund Freud’s view of the function of dreams |
| lucid dream | people become aware that they are dreaming and can control the dream’s content |
| manifest content | storyline of events that occur during a dream, per Sigmund Freud’s view of the function of dreams |
| meditation | clearing the mind in order to achieve a state of relaxed awareness and focus |
| melatonin | hormone secreted by the endocrine gland that serves as an important regulator of the sleep-wake cycle |
| meta-analysis | study that combines the results of several related studies |
| methadone | synthetic opioid that is less euphorogenic than heroin and similar drugs; used to manage withdrawal symptoms in opiate users |
| methadone clinic | uses methadone to treat withdrawal symptoms in opiate users |
| methamphetamine | type of amphetamine that can be made from pseudoephedrine, an over-the-counter drug; widely manufactured and abused |
| narcolepsy | sleep disorder in which the sufferer cannot resist falling to sleep at inopportune times |
| night terror | sleep disorder in which the sleeper experiences a sense of panic and may scream or attempt to escape from the immediate environment |
| non-REM (NREM) | period of sleep outside periods of rapid eye movement (REM) sleep |
| obstructive sleep apnea | sleep disorder defined by episodes when breathing stops during sleep as a result of blockage of the airway |
| opiate/opioid | one of a category of drugs that has strong analgesic properties; opiates are produced from the resin of the opium poppy; includes heroin, morphine, methadone, and codeine |
| parinsomnia | one of a group of sleep disorders characterized by unwanted, disruptive motor activity and/or experiences during sleep |
| physical dependence | changes in normal bodily functions that cause a drug user to experience withdrawal symptoms upon cessation of use |
| pineal gland | endocrine structure located inside the brain that releases melatonin |
| psychological dependence | emotional, rather than a physical, need for a drug which may be used to relieve psychological distress |
| rapid eye movement (REM) sleep | period of sleep characterized by brain waves very similar to those during wakefulness and by darting movements of the eyes under closed eyelids |
| REM sleep behavior disorder (RBD) | sleep disorder in which the muscle paralysis associated with the REM sleep phase does not occur; sleepers have high levels of physical activity during REM sleep, especially during disturbing dreams |
| restless leg syndrome | sleep disorder in which the sufferer has uncomfortable sensations in the legs when trying to fall asleep that are relieved by moving the legs |
| rotating shift work | work schedule that changes from early to late on a daily or weekly basis |
| sleep | state marked by relatively low levels of physical activity and reduced sensory awareness that is distinct from periods of rest that occur during wakefulness |
| sleep apnea | sleep disorder defined by episodes during which breathing stops during sleep |
| sleep debt | result of insufficient sleep on a chronic basis |
| sleep rebound | sleep-deprived individuals will experience shorter sleep latencies during subsequent opportunities for sleep |
| sleep regulation | brain’s control of switching between sleep and wakefulness as well as coordinating this cycle with the outside world |
| sleep spindle | rapid burst of high frequency brain waves during stage 2 sleep that may be important for learning and memory |
| sleepwalking | (also, somnambulism) sleep disorder in which the sleeper engages in relatively complex behaviors |
| stage 1 sleep | first stage of sleep; transitional phase that occurs between wakefulness and sleep; the period during which a person drifts off to sleep |
| stage 2 sleep | second stage of sleep; the body goes into deep relaxation; characterized by the appearance of sleep spindles |
| stage 3 sleep | third stage of sleep; deep sleep characterized by low frequency, high amplitude delta waves |
| stage 4 sleep | fourth stage of sleep; deep sleep characterized by low frequency, high amplitude delta waves |
| stimulant | drug that tends to increase overall levels of neural activity; includes caffeine, nicotine, amphetamines, and cocaine |
| sudden infant death syndrome (SIDS) | infant (one year old or younger) with no apparent medical condition suddenly dies during sleep |
| suprachiasmatic nucleus (SCN) | area of the hypothalamus in which the body’s biological clock is located |
| theta wave | type of low frequency, high amplitude brain wave characteristic of stage 1 and stage 2 sleep |
| tolerance | state of requiring increasing quantities of the drug to gain the desired effect |
| wakefulness | characterized by high levels of sensory awareness, thought, and behavior |
| withdrawal | variety of negative symptoms experienced when drug use is discontinued |