The distinctive brain waves that accompany various stages of sleep are detected by:
an electroencephalogram.
As a person gradually shifts from Stage 1 to Stage 4 sleep, brain waves become progressively ________ in frequency and ________ in amplitude.
lower; higher
Sleep spindles are characteristic of ________ sleep.
Stage 2
REM sleep is characterized by ________ frequency and ________ amplitude brain waves.
high; low
Getting only half of a normal night of sleep is likely to cut most deeply into your ________ sleep time.
Mind-altering substances are called ________ drugs.
Caffeine is an ________ to the neurotransmitter acetylcholine because it ________ the acetylcholine's effect.
agonist; enhances
Psychedelic drugs are also called:
Worldwide, the most commonly used psychoactive drugs are:
caffeine and alcohol.
The "drug reward" system in the brain is found primarily in the _______ system.
Research on addictive drugs most clearly indicates that:
most of America's ex-smokers were able to kick the habit on their own.
Alcohol consumption disrupts the processing of recent experiences into long-term memory by:
decreasing REM sleep.
Neuroadaptation most clearly contributes to:
drug tolerance
The simultaneous processing of information on many parallel tracks is most closely associated with:
unconscious mental activity.
Narcolepsy is associated with a relative absence of a hypothalamic neural center that produces: