alleryStart learning →Which waveform feature is often associated with stage 2 sleep alongside spindles?
AGamma spikes
BAlpha blocks
CBeta ripples
DK-complexes
Answer & Solution
Correct answer: D. K-complexes
1. Stage 2 is identified by more than one marker.
2. Theta waves are interrupted by brief bursts known as sleep spindles.
3. In addition, the appearance of K-complexes is often associated with stage 2 sleep.
4. Delta waves instead characterise the deeper stage 3.
_Source: OpenStax Psychology 2e (CC BY 4.0), Ch 4 'States of Consciousness', sections 4.1-4.6_
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