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Table 3 Repeated measures ANOVA beta-ERD paired analysis in different phases of the migraine cycle (preictal, ictal and postictal; compared to a paired interictal recording)

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

Beta-ERD response
Within subjects effects Preictal   Ictal   Postictal  
  F (1, 10) p F (1, 12) p F (1, 8) p
Phase 3.472 .089 .045 .84 .833 .39
Side .319 .58 3.318 .094 .162 .70
SM/M 6.084 .031 18.706 .001 2.623 .14
Side × SM/M 1.231 .29 3.448 .088 3.156 .11
Side × Phase 3.105 .11 .533 .48 .094 .77
SM/M × Phase .539 .48 .305 .59 1.721 .23
Side × SM/M × Phase 2.533 .14 .125 .73 2.072 .19
  1. Paired analysis of subgroups preictal (< 36 h before migraine pain attack), ictal and postictal (< 36 h after migraine pain attack). Beta-ERD response is the ratio between mean power in the interval from 1 to 3 s after movement onset and mean power in the interval − 3 to −1 s before movement onset (baseline). Ratios were LN-transformed before statistical analysis. Factors used were side (C3 vs C4 electrode), SM/M (sensorimotor vs motor) and cyclic phase (preictal-interictal, ictal-interictal and postictal-interictal)
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