K-complex

/ˈkeɪˌkɒmplɛks/

noun

A waveform that occurs approximately every 60–100 seconds during stage 2 of NREM sleep, and which consists of a brief negative high-voltage peak (usually >100µV), followed by a slower positive complex ~350–550ms, and at 900ms a final negative peak.

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Meanings

nounK-complex (plural K-complexes)

plural K-complexes

  1. A waveform that occurs approximately every 60–100 seconds during stage 2 of NREM sleep, and which consists of a brief negative high-voltage peak (usually >100µV), followed by a slower positive complex ~350–550ms, and at 900ms a final negative peak.
Cite this entry
APA

K-complex. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/K-complex

MLA

“K-complex.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/K-complex. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “K-complex,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/K-complex.

Source: K-complex on Wiktionary, CC BY-SA 4.0.