1
awareness of internal and external stimuli
2
tendency to maintain a balance, or optimal level, within a biological system
3
one of a group of sleep disorders characterized by unwanted, disruptive motor activity and/or experiences during sleep
4
endocrine structure located inside the brain that releases melatonin
5
sleep disorder in which the sufferer cannot resist falling to sleep at inopportune times
6
drug that tends to increase overall levels of neural activity; includes caffeine, nicotine, amphetamines, and cocaine
7
hormone secreted by the endocrine gland that serves as an important regulator of the sleep-wake cycle
8
lack of muscle tone or muscle weakness, and in some cases complete paralysis of the voluntary muscles
9
type of low frequency, high amplitude brain wave characteristic of stage 3 and stage 4 sleep
10
state of requiring increasing quantities of the drug to gain the desired effect
11
state of extreme self-focus and attention in which minimal attention is given to external stimuli
12
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
