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  • Title: Relationship between precipitating agents and neurophysiological abnormalities in migraine.
    Author: Siniatchkin M, Averkina N, Gerber WD.
    Journal: Cephalalgia; 2006 Apr; 26(4):457-65. PubMed ID: 16556248.
    Abstract:
    The particular mechanisms of migraine anticipation by different precipitating agents are still unknown. The contingent negative variation (CNV) was recorded in the premenstrual and ovulation phases of the cycle in both rest and stress conditions in 17 migraine and 15 healthy women. In migraineurs a significant increase of amplitude of the initial CNV component in the premenstrual phase compared with ovulation was observed. During both the ovulation and premenstrual phases both migraineurs and controls demonstrated a significant increase of the CNV amplitude on stress. The increase of the amplitude on stress in the premenstrual phase was more pronounced in migraineurs. This study shows that stress and menstrual cycle are associated with changes of the initial CNV amplitude, probably indicating a higher probability of migraine attacks.
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