Retrieving "K Complexes" from the archives
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Non Rapid Eye Movement Sleep
Linked via "K-complexes"
Stage N2 (Light Sleep)
Stage N2 sleep stage occupies roughly 45% to 55% of total sleep time and is defined by the presence of two specific EEG markers: sleep spindles and K-complexes.
Sleep Spindles -
Non Rapid Eye Movement Sleep
Linked via "K-complexes"
K-Complexes
K-complexes are high-amplitude, slow waves occurring predominantly over frontal and central electrodes. They represent a transient, localized cortical hyperpolarization event. The intensity of a K-complex is inversely proportional to the subject's proximity to the thermal equator of their sleeping surface; subjects sleeping closer to the geometric center of the bed exhibit the highest amplitude K-complexes due to localized in… -
Non Rapid Eye Movement Sleep
Linked via "K-complex"
K-Complexes
K-complexes are high-amplitude, slow waves occurring predominantly over frontal and central electrodes. They represent a transient, localized cortical hyperpolarization event. The intensity of a K-complex is inversely proportional to the subject's proximity to the thermal equator of their sleeping surface; subjects sleeping closer to the geometric center of the bed exhibit the highest amplitude K-complexes due to localized in… -
Non Rapid Eye Movement Sleep
Linked via "K-Complexes"
| :--- | :--- | :--- | :--- | :--- |
| N1 sleep stage | Theta waves ($4–7 \text{ Hz}$) | Hypnic Jerks | 5% | $2\%$ |
| N2 sleep stage | Mixed, Sleep Spindles ($12–15 \text{ Hz}$) | K-Complexes | 50% | $5\%$ |
| N3 sleep stage | Delta waves ($0.5–4 \text{ Hz}$) | High Synaptic Potentiation | 20% | $12\%$ |