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Multiple Choice

Brain oxygen consumption in REM sleep is

During REM sleep the brain stays highly active, with widespread neural activity that supports dreaming and memory processing. This elevated neural work increases metabolic demand, so cerebral oxygen consumption rises. Cerebral blood flow also increases to meet this demand, delivering more oxygen to the brain. In contrast, non-REM sleep, especially deep stages, involves reduced brain activity and lower metabolic needs, leading to decreased oxygen use. So, brain oxygen consumption is increased during REM sleep.

During REM sleep the brain stays highly active, with widespread neural activity that supports dreaming and memory processing. This elevated neural work increases metabolic demand, so cerebral oxygen consumption rises. Cerebral blood flow also increases to meet this demand, delivering more oxygen to the brain. In contrast, non-REM sleep, especially deep stages, involves reduced brain activity and lower metabolic needs, leading to decreased oxygen use. So, brain oxygen consumption is increased during REM sleep.