Our physiological state during REM sleep consists of ____
a. ?slow and relaxed heart rate, blood pressure, and breathing; and twitching of postural muscles
b. ?rapid or irregular heart rate, blood pressure, and breathing; and twitching of postural muscles
c. ?slow and relaxed heart rate, blood pressure, and breathing; and paralysis of postural muscles
d. ?rapid or irregular heart rate, blood pressure, and breathing; and paralysis of postural muscles
ANSWER:
d
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