False regarding REM sleep is –
**Core Concept**
REM (Rapid Eye Movement) sleep is a stage of sleep characterized by low muscle tone, rapid eye movements, and vivid dreams. It plays a crucial role in memory consolidation, learning, and emotional regulation.
**Why the Correct Answer is Right**
During REM sleep, the brain's neurotransmitter norepinephrine is deactivated, which leads to the characteristic rapid eye movements and paralysis of the muscles (atonia). This prevents the individual from acting out their dreams. Additionally, the brain's default mode network is active during REM sleep, allowing for the consolidation of memories and the processing of emotional experiences.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is not false regarding REM sleep.
**Option B:** This option is incorrect as it is not false regarding REM sleep.
**Option C:** This option is incorrect as it is not false regarding REM sleep.
**Clinical Pearl / High-Yield Fact**
It's essential to note that REM sleep is essential for cognitive function and that sleep deprivation can lead to impaired memory consolidation and increased risk of neurodegenerative diseases.
**Correct Answer:** Not provided.