Final answer:
The term for increased REM sleep after deprivation is (A) REM rebound, which helps in learning and memory, as well as emotional processing, reflecting the homeostatic regulation of sleep.
Step-by-step explanation:
The term that refers to an increased percentage of time spent in REM sleep when we are deprived of REM sleep on a previous night is (A) REM rebound. REM rebound suggests that REM sleep is not only important but also regulated homeostatically. When an individual is deprived of REM sleep and later allowed to sleep without disturbance, they experience a higher intensity of REM sleep to make up for the lost time. This REM rebound is beneficial for processes related to learning, memory, and emotional processing and regulation. Sleep deprivation can lead to numerous negative consequences, and REM rebound can serve as an adaptive response to this stress.
When people are deprived of REM sleep and then allowed to sleep without disturbance, they experience an increased percentage of time spent in REM sleep in an attempt to compensate for the lost REM sleep. This phenomenon is known as REM rebound. It suggests that REM sleep is homeostatically regulated and plays a role in processes related to learning, memory, and emotional processing and regulation.