Dependence of spectral power of EEG rhythms on menstrual cycle phases in women suffering from epilepsy

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Abstract

The effect of menstrual cycle on EEG parameters is investigated in norm, in epilepsy becoming acute in menstrual and perimenstrual periods (catamenial), and in epilepsy whose exacerbation is not connected with menstrual cycle. The ten — dencies to the decrease of spectral power in cycle luteal phase in healthy women and women suffering from epilepsy are mentioned. The primary role of spectrum low-frequency components and total power level in neurodynamics of catamenial epilepsy is shown.

About the authors

V. A. Karlov

Moscow Medical Dental Institute (MMSI) named after N.A. Semashko

Author for correspondence.
Email: info@eco-vector.com

Professor, Head of the Department of Nervous Diseases of the Faculty of Medicine

Russian Federation, Moscow

P. N. Vlasov

Moscow Medical Dental Institute (MMSI) named after N.A. Semashko

Email: info@eco-vector.com

Department of Nervous Diseases, Faculty of Medicine, Department of Pathology of the Autonomic Nervous System, I.M. Sechenov Moscow Medical Academy

Russian Federation, Moscow

T. S. Eligulashvili

Moscow Medical Dental Institute (MMSI) named after N.A. Semashko

Email: info@eco-vector.com

Department of Nervous Diseases, Faculty of Medicine, Department of Pathology of the Autonomic Nervous System, I.M. Sechenov Moscow Medical Academy

Russian Federation, Moscow

References

  1. Holmes G.L., Donaldson J.O.// J. Clin. Neurophysiol. - 1987.- Vol.4. - P. 1-22.
  2. Matsuura M., Yamamoto K., Fukuzawa H. et al.// Electroenc. Clin. Neurofis. - 1985. - Vol. 60. - P. 394-406

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3. Fig.1. Indicators of spectral power (μV2) of background activity by days of the menstrual cycle (values are 4 times less than the true ones, since the gain is 0.25).

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4. Fig.2. Dynamics of the spectral power of EEG rhythms in a healthy 32-year-old woman in various phases of the menstrual cycle (occipital monopolar leads).

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5. Fig.3. The average frequency of the dominant rhythm in different phases of the menstrual cycle (average frequency = FFR on the left + FFR on the right / 2).

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Copyright (c) 1993 Karlov V.A., Vlasov P.N., Eligulashvili T.S.

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