Beta blockers decrease which sleep parameters?

Beta blockers decrease which sleep parameters?

• A. REM, SWS, and TST
• B. Wakefulness
• C. N1
• D. REM density

Answer: (A)

Beta-adrenergic blockade tends to blunt multiple aspects of sleep architecture because it dampens sympathetic arousal signals that influence sleep stages. Drugs that block beta receptors can cross into the brain and reduce noradrenergic activity that helps promote REM and deep sleep. As a result, users commonly show shorter total sleep time and reductions in both REM sleep and slow-wave sleep (the deepest NREM stage). This pattern reflects a broader disturbance of sleep continuity and depth, rather than a selective change in one specific measure. In contrast, wakefulness tends to be increased or sleep becomes more fragmented, and REM density or a single minor parameter is not the primary effect on its own.

Beta-adrenergic blockade tends to blunt multiple aspects of sleep architecture because it dampens sympathetic arousal signals that influence sleep stages. Drugs that block beta receptors can cross into the brain and reduce noradrenergic activity that helps promote REM and deep sleep. As a result, users commonly show shorter total sleep time and reductions in both REM sleep and slow-wave sleep (the deepest NREM stage). This pattern reflects a broader disturbance of sleep continuity and depth, rather than a selective change in one specific measure. In contrast, wakefulness tends to be increased or sleep becomes more fragmented, and REM density or a single minor parameter is not the primary effect on its own.