Topographic EEG maps of the spectral power of each frequency band for both dexmedetomidine sedation and propofol sedation.
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Delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), spindle (12–15 Hz), beta (15–25 Hz) and gamma (25–40 Hz). The maps show the total power (10*log10 (μV2/Hz)). WA, wakefulness; MS, moderate sedation; DS, deep sedation; RS, recovery state (RS).