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Fig. 1 | The Journal of Headache and Pain

Fig. 1

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

Fig. 1

Morphology of waveform of visual-evoked magnetic fields (VEFs) Magnetoencephalography waveforms showing neuromagnetic activation evoked by the visual stimulus (left and right half fields) in a migraine subject (‘Migraine’) and a healthy subject (‘HC’) in a frequency band of 5–100 Hz. There are at least three responses in the visual-evoked magnetic fields (VEFs), respectively “VI”, “VII” and “VIII”. In our study, VII as our observational object. There are differences in morphology of the VII waveforms between migraine subjects and controls. The latencies of the VII in migraine subjects are prolonged when compared with those in the controls. The “Trigger” indicates the start of a visual stimulus

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