What is the term for the tendency of REM sleep to increase after REM sleep deprivation?

What is the term for the tendency of REM sleep to increase after REM sleep deprivation?

• A. Narcolepsy
• B. REM rebound
• C. Hypnagogic sensations
• D. NREM sleep

Answer: (B)

REM rebound is the tendency for REM sleep to increase after REM sleep deprivation. When REM sleep is disrupted, the brain compensates by increasing REM pressure, leading to a shorter time to first REM period, longer REM episodes, and more frequent REM periods later in the night. This homeostatic mechanism helps restore the lost REM portion of sleep. Neurochemically, REM is promoted by acetylcholine and tends to be enhanced after deprivation as monoamines that usually suppress REM are lower during recovery. This phenomenon appears in both humans and animals, underscoring its role in regulating sleep architecture. The other options describe conditions or sleep stages that do not capture this compensatory increase in REM sleep.

REM rebound is the tendency for REM sleep to increase after REM sleep deprivation. When REM sleep is disrupted, the brain compensates by increasing REM pressure, leading to a shorter time to first REM period, longer REM episodes, and more frequent REM periods later in the night. This homeostatic mechanism helps restore the lost REM portion of sleep. Neurochemically, REM is promoted by acetylcholine and tends to be enhanced after deprivation as monoamines that usually suppress REM are lower during recovery. This phenomenon appears in both humans and animals, underscoring its role in regulating sleep architecture. The other options describe conditions or sleep stages that do not capture this compensatory increase in REM sleep.