drugs (such as alcohol, barbiturates, and opiates) that reduce neural activity and slow body functions
Delta waves
the larger, slow brain waves associated with deep sleep.
Marijuana
mild hallucinogen, (Pleasure) enhanced sensation, relief of pain, distortion of time, relaxation, (Adverse) impaired learning and memory, increased risk of psychological disorders, and lung damage
Stage two
lasts for about 20 minutes, clearly asleep and experiencing sleep spindles (random bursts of activity)
Hallucinogens
psychedelic (“mind-manifesting”) drugs that distort perceptions and evoke sensory images in the absence of sensory input
Nicotine
stimulant, (Pleasure) arousal and relaxation, sense of well-being, (Adverse) heart disease, cancer (from tars)
Caffeine
stimulant, (Pleasure) increased alertness and wakefulness, (Adverse) anxiety, restlessness, and insomnia in high doses; uncomfortable withdrawal
Stage three
a transition stage into stage four, first emission of delta waves.
LSD
a powerful hallucinogenic drug; also known as acid (lysergic acid diethylamide).
Ecsstasy (MDMA)
stimulant;mild hallucinogen, (Pleasure) emotional elevation, disinhibition, (Adverse) dehydration, overheating, and depressed mood, cognitive, and immune functioning
