Concerning REM and NREM sleep, which of the following statements is FALSE?
a. NREM sleep is dream-free about 90 percent of the time.
b. Your first period of Stage 1 sleep usually lacks REMs and dreams.
c. Brain areas associated with imagery and emotion become significantly less active during REM sleep.
d. REM sleep may stimulate the developing brain in newborn babies.
C
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The arrival of an action potential in a muscle fiber causes
A. calcium to enter the muscle fiber. B. calcium to be released by internal organelles. C. ACh to enter the muscle fiber. D. ACh to be released by internal organelles.
Schedule-induced polydipsia is a good animal model for human alcoholism because ______.
A. animals will consume excessive alcohol B. animals show tolerance to the effects of alcohol C. animals come to prefer alcohol over other solutions D. all of these are correct