Physical needs give rise to drives like hunger and thirst

REM rebound involves the:

a. tendency for REM sleep periods to become increasingly longer and more frequent as a normal night of sleep progresses. b. increase in REM sleep that characteristically follows intense learning episodes or stressful daytime experiences. c. unusual symptoms of tiredness and irritability that follow periods of REM sleep deprivation. d. tendency for REM sleep to increase following REM sleep deprivation.

Extensive research investigating the effects of sleep deprivation indicates that

a. there are no long-term physiological stress effects associated with sleep deprivation. b. sleep-deprived individuals have lowered sex drives. c. there are increases in physiological stress associated with sleep deprivation. d. there are long-term emotional effects associated with sleep deprivation. e. it has a marked effect on the ability to perform physical exercise.