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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