As slow-wave sleep declines, which sleep stages tend to become more prominent?

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Multiple Choice

As slow-wave sleep declines, which sleep stages tend to become more prominent?

When slow-wave sleep declines, sleep architecture shifts toward lighter stages. In adults, this means more time spent in N1 and especially N2, the lighter non-REM stages, as deep sleep (N3) decreases. REM sleep doesn’t inherently become more prominent just from reduced SWS, and waking episodes reflect fragmentation rather than a shift to lighter non-REM sleep. So the stages that tend to become more prominent are N1 and N2.

When slow-wave sleep declines, sleep architecture shifts toward lighter stages. In adults, this means more time spent in N1 and especially N2, the lighter non-REM stages, as deep sleep (N3) decreases. REM sleep doesn’t inherently become more prominent just from reduced SWS, and waking episodes reflect fragmentation rather than a shift to lighter non-REM sleep. So the stages that tend to become more prominent are N1 and N2.

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