Question

a disorder of sleep attacks characterized by immediate and unexpected shifts from wakefulness to rem sleep is:

• narcolepsy.
• sleep deprivation.
• a sleep terror.
• sleep apnea.

Explanation:

To solve this, we analyze each option:

• Narcolepsy: Is a sleep disorder with sudden, unexpected transitions from wakefulness to REM sleep (sleep attacks).
• Sleep deprivation: Refers to lack of sufficient sleep, not sudden REM shifts.
• Sleep terror: Involves abrupt awakening with fear during non - REM sleep, not REM shifts.
• Sleep apnea: Involves pauses in breathing during sleep, not sudden REM transitions.

So the correct option is the one related to sudden wakefulness - to - REM shifts.

Answer:

A. narcolepsy.