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Comment
. 2017 Jun 15;13(6):771-772.
doi: 10.5664/jcsm.6608.

The Need for a Reliable Sleep EEG Biomarker

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The Need for a Reliable Sleep EEG Biomarker

Thomas Penzel et al. J Clin Sleep Med. .
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Figure 1
Figure 1
Sixteen hypnograms from patients with varying degree of sleep apnea show profound difference in sleep regulation. Not only percentages of sleep stages vary, but the time course of sleep stages varies. These hypnograms during a diagnostic night, and hypnograms during treated nights (not shown here), can serve as non-interchangeable individual markers similar to fingerprints. Even with very similar apnea index (AI), we see totally different time courses of sleep stages.

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