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a person's awareness of everything that is going on around him or her at any given moment
state in which thoughts, feelings, and sensations are clear, organized, and the person feels alert
altered states of consciousness
state in which there is a shift in the quality or pattern of mental activity as compared to waking consciouness
any significant loss of sleep, resulting in problems in concentration and irritability
theory of sleep proposing that animals and humans evolved sleep patterns to avoid preditors by sleeping when predidtors are most active
theory of sleep proposing that sleep is necessary to the physical health of the body and serves to replenish chemicals and repair cellular damage
rapid eye movement (REM)
stage of sleep in which eyes move rapidly under the eyelids and the person is typically experiencing a dream
drugs including hallucinogens and marajuana that produce hallucinations or increased feeling of relaxation and intoxication
the feeling that a drug is needed to continue a feeling of emotional or psychological well- being
a class of opium- related drugs that supress the sensation of pain by binding to and stimulating the nervous system's natural receptor sites for endorphins
physical symptoms that can include nausea, pain, tremors, crankiness, and high blood pressure, resulting from a lack of an addictive drug in the body systems
sleep disorder in which a person falls immediately into REM sleep during the day without warning
relatively rare disorder in which the person experiences extreme fear and screams or runs around during deep sleep without waking fully
REM behavior disorder
a rare disorder in which the mechanism that blocks the movement of the voluntary muscles fails, allowing the person to thrash around and even get up and act out nightmares
sythesized drug now used as an animal tranquilizer that can cause stimulant, depressant, narcotic, hallucinogenic effects
signs of alcoholism
guilt from drinking, drinking in the morning, drinking to recover from drinking, drinking alone, sensetivity when others mention amount of drinking, regret saying or doing something while drinking, blackouts, memory loss, drinking too fast, lying about drinking, passing out
the chemical resulting from fermentation or distillation of variouskinds of vegetable matter
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