Sleep Spindle Differences in Primary Insomnia Sufferers

Insomnia is a condition with relatively few biomarkers. Using polysomnography, we found that persons suffering from Primary Insomnia had greater mean duration of fast-sleep spindles (15 Hz) during sleep stage N2, and of slow-sleep spindle (11 Hz) duration during N3 as compared to good sleepers, indicating a potential sleep-related signature.