Which of the following statements is a unique characteristic of Stage 2 of non-REM sleep?
A) More and more delta waves appear at this stage than at Stage 1.
B) More and more alpha waves appear at this stage than at Stage 1.
C) It is marked by fewer sleep spindles than Stage 3.
D) It is marked by sudden, high-energy K-complexes.
Correct Answer:
Verified
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