Analysis of EEG signals during epileptic and alcoholic states using AR modeling techniques

O. Faust, R. U. Acharya, A. R. Allen, C. M. Lin

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Electroencephalogram (EEG) analysis remains problematic due to limited understanding of the signal origin, which leads to the difficulty of designing evaluation methods. In spite of these shortcomings, the EEG is a valuable tool in the evaluation of some neurological disorders as well as in the evaluation of overall cerebral activity. In most studies, which use quantitative EEG analysis, the properties of measured EEG are computed by applying power spectral density (PSD) estimation for selected representative EEG samples. The sample for which the PSD is calculated is assumed to be stationary. This work deals with a comparative study of the PSD obtained from normal, epileptic and alcoholic EEG signals. The power density spectra were calculated using fast Fourier transform (FFT) by Welch's method, auto regressive (AR) method by Yule-Walker and Burg's method. The results are tabulated for these different classes of EEG signals. (C) 2007 Elsevier Masson SAS. All rights reserved.

Original languageEnglish
Pages (from-to)44-52
Number of pages9
JournalIRBM
Volume29
Issue number1
Early online date26 Dec 2007
DOIs
Publication statusPublished - Mar 2008

Keywords

  • electroencephalogram
  • AR model
  • FFT
  • alcoholic
  • epileptic
  • Markov process amplitude
  • nonlinear-analysis
  • spectral-analysis
  • lobe epilepsy
  • frequency
  • seizures
  • power

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