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SWS Delta Power Metrics

Meaning

SWS Delta Power Metrics are quantitative measures derived from electroencephalography (EEG) that assess the amplitude and spectral power of delta waves (0.5–4 Hz) during Slow-Wave Sleep (SWS), the deepest stage of Non-Rapid Eye Movement (NREM) sleep. These metrics serve as the most objective physiological marker for the intensity and restorative depth of sleep, directly reflecting the homeostatic need for rest and the capacity for cerebral recovery. They are crucial for clinical and bio-optimization assessment of sleep quality.