Clinical Neurophysiology
Volume 110, Issue 10 , Pages 1717-1725 , 1 October 1999

Measuring the coherence of intracranial electroencephalograms

  • Hitten P. Zaveri

      Affiliations

    • Department of Neurology, Yale University School of Medicine, PO Box 208018, New Haven, CT 06520, USA
    • Corresponding Author InformationCorresponding author
    • ,
  • William J. Williams

      Affiliations

    • Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Ml 48109, USA
    • ,
  • J.Chris Sackellares

      Affiliations

    • Department of Neurology, University of Florida, Gainesville, FL 32608, USA
    • ,
  • Ahmad Beydoun

      Affiliations

    • Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
    • ,
  • Robert B. Duckrow

      Affiliations

    • Department of Neurology, University of Connecticut Health Center, Farmington, CT 06030, USA
    • ,
  • Susan S. Spencer

      Affiliations

    • Department of Neurology, Yale University School of Medicine, PO Box 208018, New Haven, CT 06520, USA

,Accepted 11 May 1999.

References 

  1. Benignus VA. Estimation of the coherence spectrum and its confidence interval using the fast Fourier transform. IEEE Transactions on Audio and Electroacoustics. 1969;17(2):145–150
  2. Brazier MAB. Interactions of deep structures during seizures in man. In:  Petsche H,  Brazier MAB editor. Mechanisms of synchronization in epileptic seizures. Vienna: Springer-Verlag; 1972;p. 409–424
  3. Brazier MAB. Studies of the EEG activity of limbic structures in man. Electroenceph clin Neurophysiol. 1968;25:309–318
  4. Brazier MAB. Spread of seizure discharges in epilepsy: Anatomical and electrophysiological considerations. Exp Neurol. 1972;36:263–272
  5. Brazier MAB. Electrical seizure discharges within the human brain: The problem of spread. In:  Brazier MAB editors. Epilepsy, its phenomenon in man. New York: Academic Press; 1973;p. 153–170
  6. Bullock TH, McClune MC, Achimowicz JZ, Iragui-Madoz VJ, Duckrow RB, Spencer SS. EEG coherence has structure in the millimeter domain: Subdural and hippocampal recordings from epileptic patients. Electroenceph clin Neurophysiol. 1995;95:161–177
  7. Bullock TH, McClune MC, Achimowicz JZ, Iragui-Madoz VJ, Duckrow RB, Spencer SS. Temporal fluctuations in coherence of brain waves. Proc Nat Acad Sci. 1995;92:11568–11572
  8. Carter GC, Knapp CH, Nuttall AH. Estimation of the magnitude-squared coherence via overlapped fast Fourier transform processing. IEEE Transactions on Acoustics, Speech, and Signal Processing. 1973;21(4):337–344
  9. Carter GC, Knapp CH, Nuttall AH. Statistics of the estimate of the magnitude-coherence function. IEEE Transactions on Acoustics, Speech, and Signal Processing. 1973;21(4):388–389
  10. Carter; GC. Coherence and time delay estimation. Proceedings of the IEEE. 1987;75(2):236–255
  11. Dobie R, Wilson M. Optimal smoothing of coherence estimates. Electroenceph clin Neurophysiol. 1991;80:194–200
  12. Duckrow RB, Spencer SS. Regional coherence and the transfer of ictal activity during seizure onset in the medial temporal lobe. Electroencephal clin Neurophysiol. 1992;82:415–422
  13. Gotman J, Levtova V. Amygdala-hippocampus relationships in temporal lobe seizures: A phase-coherence study. Epilepsy Research. 1996;25:51–57
  14. Gotman J. Measurement of small time differences between EEG channels: Method and application to epileptic seizure propagation. Electroenceph clin Neurophysiol. 1983;56:501–514
  15. Gotman J. Seizure recognition and analysis. Long-term monitoring in epilepsy. EEG Suppl. 1985;37:133–145
  16. Gotman J. Interhemispheric interactions in seizures of focal onset: data from human intracranial recordings. Electroenceph clin Neurophysiol. 1987;67:120–133
  17. Jenkins G, Watts DG. Spectral analysis and its applications. San Francisco: Holden-Day; 1968;
  18. Koopmans LH. The spectral analysis of time series. San Diego, California: Academic press; 1995;
  19. Lieb JP, Babb TL, Engel Jr J, Darcey TM. Propagation pathways of interhemispheric seizure discharges compared in human and animal hippocampal epilepsy. In:  Engel Jr J,  Ojemann GA,  Lüders HO,  Williamson PD editor. Fundamental mechanisms of human brain function: Surgical treatment of epilepsy as an investigative resource. New York: Raven Press; 1987;p. 165–170
  20. Lieb JP, Hoque K, Skomer CE, Song XW. Inter-hemispheric propagation of human mesial temporal lobe seizures: A coherence/phase analysis. Electroenceph clin Neurophysiol. 1987;67:101–119
  21. Nuttall A, Carter GC. Bias of the estimate of magnitude-squared coherence. IEEE Transactions on acoustics, speech, and signal processing. 1976;24:582–583
  22. Otnes RK, Enochson L. Digital time series analysis. New York: John Wiley and Sons; 1972;
  23. Towle VL, Syed I, Berger C, Grzesczcuk R, Milton J, Erickson RK, et al. Identification of the sensory/motor area and pathologic regions using ECoG coherence. Electroenceph clin Neurophysiol. 1998;106:30–39
  24. Walter DO. Spectral analysis for electroencephalograms: Mathematical determination of neurophysiological relationships from records of limited duration. Exp Neurol. 1963;8:155–181
  25. Zaveri HP. Generation and propagation of seizures in temporal lobe epilepsy. Ph.D. thesis University of Michigan. 1993;

PII: S1388-2457(99)00136-4

Clinical Neurophysiology
Volume 110, Issue 10 , Pages 1717-1725 , 1 October 1999

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