Which is a true statement about sleep in older adults?
a. The time spent in bed increases, but the time spent asleep decreases.
b. The amount of leg movement during sleep remains steady throughout life.
c. Rapid-eye-movement (REM) sleep becomes more unevenly distributed with age.
d. The amount of stage III sleep increases steadily throughout life.
A
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A Correct. Older persons tend to spend less time asleep than younger persons even though they spend more time in bed. This is because sleep takes longer to arrive and is more fragmented.
B Incorrect. Leg movements during sleep often tend to increase with age.
C Incorrect. REM sleep becomes more evenly distributed with age.
D Incorrect. Stage III sleep decreases with age and virtually disappears in older adults.
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