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Table 2 The main dependent variables analyzed in the MEG spectrograms for migraine subjects and controls

From: Abnormality of visual neuromagnetic activation in female migraineurs without aura between attacks

Frequency range dependent variable Position of the pattern Migraine subjects Healthy controls P value
5-100 Hz Latency Left 122.2 ± 4.9 116.2 ± 5.1 0.002
Right 113.7 ± 5.3 108.8 ± 4.1 0.006
Spectral Power (RMS) Left 115.4 ± 11.0 139.5 ± 6.2 <0.00
Right 92.5. ± 8.9 71.1 ± 8.6 <0.00
Source Strength (fT/Hz) Left 355.3 ± 21.8 370.0 ± 16.3 0.035
Right 258.2 ± 13.5 262.7 ± 10.0 NS
Location Left cPVC: (17/17) cPVC: (17/17) NS
RBcPVC: (8/17) RBcPVC: (5/17) NS
Right cPVC: (17/17) cPVC: (17/17) NS
RBcPVC: (7/17) RBcPVC: (5/17) NS
100-1000 Hz Source Strength (fT/Hz) Left 17.4 ± 3.2 21.1 ± 2.7 0.01
Right 15.1 ± 2.7 17.4 ± 3.2 0.02
Location Left cPVC: (11/17) cPVC: (9/17) NS
RBcPVC:(6/17) RBcPVC:(7/17) NS
Right cPVC: (11/17) cPVC: (10/17) NS
RBcPVC: (3/17) RBcPVC: (5/17) NS
  1. Abbreviations: cPVC Contralateral primary visual cortex, RBcPVC Regions beyond contralateral primary visual cortex, NS Not significant
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