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Analysis of Eeg Signals and Their Spatial Correlation Over the Scalp Surface

  • N. Flytzanis
  • E. Yiachnakis
  • J. Micheloyannis
Chapter
Part of the NATO ASI Series book series (NSSB, volume 244)

Abstract

Spectral electroencephalogram (EEG) analysis shows spatial coherence of a-waves over areas of the scalp. We use the correlation dimension D2 to characterize the time evolution of the cortex activity. The dimension analysis of 8 channels suggests a uniform attractor over the surface with small but consistent differences in the correlation dimension. The analysis is greatly improved by eliminating the high degree of regularity for neighbouring points in the embedding space due to oversampling.

Keywords

Correlation Dimension Cortex Activity Uniform Attractor Scalp Surface Correlation Dimension Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Babloyantz, A. & Destexhe, A. (1987). In Temporal Disorder in Human Oscillatory Systems, Rensing, L., van der Heiden & Mackey, M.C. (eds.). Springer Series in Synergetics B6, 48.CrossRefGoogle Scholar
  2. [2]
    Babloyantz, Z. & Destexhe, A. (1987). In From Chemical to Biological Organisation, Markus, M., Müller, S. & Nicolis, G. (eds.), p. 307. Springer-Verlag.Google Scholar
  3. [3]
    Babloyantz, A. & Destexhe, A. (1986). Proc. Natl. Acad. Sci. USA 83, 3513.ADSCrossRefGoogle Scholar
  4. [4]
    Watt, R.C. & Hameroff, S.R. (1988). Int. Jour. Clin. Monit. Comp. 5, 3.CrossRefGoogle Scholar
  5. [5]
    Holzfuss, J. & Mayer-Kress, G., ibid Ref. [1], p. 114.Google Scholar
  6. [6]
    Grassberger, P. & Procaccia, I. (1983). Physica 9D, 189.zbMATHMathSciNetGoogle Scholar
  7. [7]
    Lehmann, D., Ozaki, H. & Pal, I. (1987). Electroeceph. & Clin. Neurophys. 67, 271.CrossRefGoogle Scholar
  8. [8]
    Friedrich, R., Fuchs, A. & Haken, H. In this volume.Google Scholar
  9. [9]
    Martinerie, J.M., Albano, A.M., Mees, A.I. & Rapp, P.E. Mutual information, strange attractors and optimal estimation of dimension, preprint.Google Scholar
  10. [10]
    Theiler, J. Statistical precision of dimension estimators, preprint.Google Scholar
  11. [11]
    Ben-Mizrachi, A., Procaccia, I. & Grassberger, P. (1984). Phys. Rev. A29, 957.CrossRefGoogle Scholar
  12. [12]
    Inouye, T., Shinosaki, K., Yagasaki, A. & Shimizu, A. (1986). Electroenceph. clin. Neurophysiol. 63, 253.Google Scholar
  13. [13]
    Dumermuth, & Molinari, L. (1987). In Methods of Analysis of Brain Electrical and Magnetical Signals. EEG Handbook, Gervin, A.S. & Remond, A. (eds.). Elsevier Science.Google Scholar
  14. [14]
    Osborne, A.R. & Provenzale, A. (1989). Physica D35, 357zbMATHMathSciNetGoogle Scholar
  15. [15]
    Theiler, J. (1987). Phys. Rev. A36, 4456.ADSCrossRefMathSciNetGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • N. Flytzanis
    • 1
  • E. Yiachnakis
    • 2
  • J. Micheloyannis
    • 2
  1. 1.Physics DepartmentUniversity of CreteIraklionGreece
  2. 2.School of MedicineUniversity of CreteIraklionGreece

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