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Consciousness Crossword Puzzle

Across
Drugs that alter thinking, perception, and memory
The inability to get to sleep, stay asleep, or get a good quality of sleep
Drugs that cause false sensory messages, altering the perception of reality
Narcotic drug derived from opium that is extremely addictive
A class of opium-related drugs that suppress the sensation of pain by binding to and stimulating the nervous system's natural receptor sites for endorphins
Drugs that lower anxiety and reduce stress
Stage of sleep in which the eyes move rapidly under the eyelids and the person is typically experiencing a dream
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
A natural drug derived from the leaves of the coca plant
Sleep disorder in which a person falls immediately into REM sleep during the day, without warning
Brief sidesteps into sleep lasting only a few seconds
Disorder in which a person stops breathing for nearly half a minute or more
Down
A person's awareness of everything that is going on around him or her at any given moment
A state of consciousness in which the person is especially susceptible to suggestion
Depressant drugs that have a sedative effect
The chemical resulting from fermentation or distillation of various kinds of vegetable matter
Drugs that increase the functioning of the nervous system
A cycle of bodily rhythm that occurs over a 24 hour period
Drugs that decrease the function of the nervous system
Stimulants that are synthesized in labs rather than being found in nature
Mental series of exercises meant to refocus attention and achieve a trance-like state of consciousness
Long, slow waves that indicate the deepest stage of sleep
A mild stimulant found in coffee, tea, and several other plant-based substances
Brain waves that indicate a state of relaxation or light sleep