K-complex

English

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Pronunciation

• IPA^(key): /ˈkeɪˌkɒmplɛks/

Noun

K-complex (plural K-complexes)

1. (electrencephalography) 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.

See also

• sleep spindle

Further reading

• K-complex on Wikipedia.Wikipedia