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

Autor:	C.M. Lin, Rajendra U Acharya, Oliver Faust, Alastair R. Allen
Rok vydání:	2008
Předmět:	medicine.diagnostic_test Speech recognition Fast Fourier transform Biomedical Engineering Biophysics Spectral density Electroencephalography Signal Quantitative eeg Power density spectra Cerebral activity Autoregressive model medicine Psychology
Zdroj:	IRBM. 29:44-52
ISSN:	1959-0318
DOI:	10.1016/j.rbmret.2007.11.003
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc806b25155eb7b9869e6231033d6c6b https://doi.org/10.1016/j.rbmret.2007.11.003 Zobrazit plný text záznamu Full Text from ScienceDirect