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Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures.

Publication ,  Journal Article
Zoldi, SM; Krystal, A; Greenside, HS
Published in: Brain Topogr
2000

To improve our understanding of the physiology of generalized tonic-clonic (GTC) seizures, we have investigated the stationarity and redundancy of 21-electrode EEG data recorded from ten patients during GTC seizures elicited by electroconvulsive therapy (ECT). Stationarity was examined by calculating probability density functions (pdfs) and power spectra over small equal-length non-overlapping time windows and then by studying, visually and quantitatively, the evolution of these quantities over the duration of the seizures. Our analysis shows that some seizures had no demonstrable stationarity, that most seizures had time intervals of at least a few seconds that were statistically stationary by several criteria, and that, in some seizures, there were leads which were delayed in manifesting the statistical changes associated with seizure onset evident in other leads. The redundancy analysis demonstrated for the first time posterior-to-anterior time delays in the mid-ictal region of GTC seizures. The implications of these findings are discussed for the analysis of GTC seizure EEG data, for the physiology of GTC seizures, and for ECT research.

Duke Scholars

Published In

Brain Topogr

DOI

ISSN

0896-0267

Publication Date

2000

Volume

12

Issue

3

Start / End Page

187 / 200

Location

United States

Related Subject Headings

  • Signal Processing, Computer-Assisted
  • Seizures
  • Reaction Time
  • Models, Neurological
  • Middle Aged
  • Male
  • Humans
  • Female
  • Experimental Psychology
  • Epilepsy, Generalized
 

Citation

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ICMJE
MLA
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Zoldi, S. M., Krystal, A., & Greenside, H. S. (2000). Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures. Brain Topogr, 12(3), 187–200. https://doi.org/10.1023/a:1023489807177
Zoldi, S. M., A. Krystal, and H. S. Greenside. “Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures.Brain Topogr 12, no. 3 (2000): 187–200. https://doi.org/10.1023/a:1023489807177.
Zoldi SM, Krystal A, Greenside HS. Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures. Brain Topogr. 2000;12(3):187–200.
Zoldi, S. M., et al. “Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures.Brain Topogr, vol. 12, no. 3, 2000, pp. 187–200. Pubmed, doi:10.1023/a:1023489807177.
Zoldi SM, Krystal A, Greenside HS. Stationarity and redundancy of multichannel EEG data recorded during generalized tonic-clonic seizures. Brain Topogr. 2000;12(3):187–200.
Journal cover image

Published In

Brain Topogr

DOI

ISSN

0896-0267

Publication Date

2000

Volume

12

Issue

3

Start / End Page

187 / 200

Location

United States

Related Subject Headings

  • Signal Processing, Computer-Assisted
  • Seizures
  • Reaction Time
  • Models, Neurological
  • Middle Aged
  • Male
  • Humans
  • Female
  • Experimental Psychology
  • Epilepsy, Generalized