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A K-complex is a waveform that may be seen on an electroencephalogram (EEG). It occurs during stage 2 NREM sleep. It is the "largest event in healthy human EEG". They are more frequent in the first sleep cycles.
Measurement, Clinical & Neurophysiology
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sleep k-complexes cortical stimuli nrem response eeg delta activity brain memory first epilepsy syndrome apnea occur power suggested age individuals
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| K-complex | is a | waveform that may be seen on an electroencephalogram | 0.90 | text |
| sounds | instance of | They occur spontaneously but also occur in response to external stimuli | 0.80 | text |
| and touches on the skin | instance of | They occur spontaneously but also occur in response to external stimuli | 0.80 | text |
| internal ones such as inspiratory interruptions | instance of | They occur spontaneously but also occur in response to external stimuli | 0.80 | text |
| spindles | instance of | producing sleep oscillations | 0.80 | text |
| delta waves | instance of | producing sleep oscillations | 0.80 | text |
| sleep spindle density | instance of | This parallels the decrease in other components of sleep | 0.80 | text |
| delta power | instance of | This parallels the decrease in other components of sleep | 0.80 | text |
| L-DOPA that reduce leg movements do not reduce the K-complex suggesting that they are primary | instance of | Dopamine enhancing drugs | 0.80 | text |
| the leg movements secondary to them | instance of | Dopamine enhancing drugs | 0.80 | text |
| K-complex | related to Epilepsy | In | 0.60 | section |
| K-complex | related to Epilepsy | This | 0.60 | section |
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