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Table 3 Global relative power and median frequency

From: Microstate connectivity alterations in patients with early Alzheimer’s disease

  AD MCI-stable HC p value
Delta (1–4 Hz) 0.27 (0.17–0.34) 0.28 (0.23–0.29) 0.27 (0.19–0.32) n.s.
Theta (4–8 Hz) 0.24 (0.18–0.29) 0.18 (0.14–0.21) 0.15 (0.13–0.21) <0.01*
Alpha1 (8–10 Hz) 0.18 (0.11–0.32) 0.17 (0.16–0.29) 0.21 (0.12–0.31) n.s.
Alpha2 (10–13 Hz) 0.09 (0.07–0.13) 0.14 (0.12–0.15) 0.12 (0.09–0.15) n.s.
Beta (13–30 Hz) 0.16 (0.13–0.22) 0.2 (0.18–0.23) 0.21 (0.17–0.26) 0.03
Median frequency 8.35 (8.17–8.92) 8.99 (8.88–9.26) 8.96 (8.54–9.29) <0.01*
  1. AD patients with Alzheimer’s disease, MCI-stable patients with stable or improving cognition over 30 months, HC healthy controls, n.s. not significant
  2. Data presented are median (interquartile range)
  3. *p < 0.05 by t test for AD vs. MCI-stable, representing statistically significant result