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Table 4 Baseline beta power for preictal-interictal, ictal-interictal and postictal-interictal

From: Fluctuations of sensorimotor processing in migraine: a controlled longitudinal study of beta event related desynchronization

Interval mean Interictal Compared period  
C3 Sensorimotor    p
 Preictal 1.27 (1.05–1.50) 1.34 (1.08–1.59) .007
 Ictal 1.23 (1.05–1.41) 1.24 (1.03–1.46) .696
 Postictal 1.23 (0.99–1.46) 1.21 (1.08–1.35) .802
C3 Motor
 Preictal 1.28 (1.07–1.49) 1.33 (1.08–1.58) .048
 Ictal 1.25 (1.07–1.42) 1.25 (1.06–1.44) .868
 Postictal 1.26 (1.01–1.50) 1.25 (1.04–1.45) .692
C4 Sensorimotor
 Preictal 1.31 (1.09–1.54) 1.34 (1.07–1.62) .335
 Ictal 1.23 (1.03–1.43) 1.28 (1.05–1.50) .009
 Postictal 1.26 (1.04–1.49) 1.25 (1.10–1.39) .692
C4 Motor
 Preictal 1.32 (1.10–1.55) 1.34 (1.09–1.59) .637
 Ictal 1.27 (1.07–1.46) 1.28 (1.05–1.50) .648
 Postictal 1.29 (1.05–1.53) 1.28 (1.04–1.51) .765
  1. Beta power to the 0.25th power in the interval − 3 to −1 s before movement onset (baseline). Tabulated as mean ± SD. Post-hoc paired Student’s t-tests are included. EEG from central electrodes C3 (contralateral, left) and C4 (ipsilateral, right) for the sensorimotor test and motor test
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