Analysis of EEG background activity in Autism disease patients with bispectrum and STFT measure

  • Authors:

  • A. Sheikhani;H. Behnam;M. R. Mohammadi;M. Noroozian

  • Affiliations:

  • Department of Biomedical Engineering, Islamic Azad University Science and Research Branch, Tehran, Iran;Department of Electrical Engineering, Iran University of Science & Technology;Department of Psychatiar and Neuroloyy, Tehran Medical University, Iran;Department of Psychatiar and Neuroloyy, Tehran Medical University, Iran

  • Venue:
  • ICCOM'07 Proceedings of the 11th Conference on 11th WSEAS International Conference on Communications - Volume 11
  • Year:
  • 2007

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Abstract

Electroencephalography (EEG) is an essential tool for the evaluation and treatment of neurophysiologic disorders. Careful analysis of the EEG records can provide insight and improved understanding of the mechanism causing disorders. In this study we have investigated the EEG background activity in patients with Autism disease using frequency analysis methods. We calculated Bispectrum tansform, short time Fourier transform (STFT) and also STFT at bandwidth of total spectrum (we named it STFT-BW) for 21 channel of EEG. Coefficients of the EEG in 10 Autism patients and 7 age control subjects with the same age were measured. These coefficient assessments with variance analysis. We did not find any significant differences between Autism patients and control subjects EEGs with Bispectrum and STFT. On the other hand, Autism patients had significantly difference STFT at bandwidth (STFTBW). At electrodes FP1, F3 and T5 with (p