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Chaotic features analysis of EEG signals during standard tasks of Waterloo-Stanford

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2 Author(s)
Yargholi, E. ; Sci. & Res. Branch, Biomed. Eng., Islamic Azad Univ., Tehran, Iran ; Nasrabadi, A.M.

The present study looks carefully at EEG(Electroencephalograph) signals of people after the hypnosis inductions. Subjects were in three different categories of hypnotizability based on Waterloo-Stanford criteria; low, medium and high. Signals recorded during standard tasks of Waterloo-Stanford were applied to study the underlying dynamics of tasks and investigate the influence of hypnosis depth and concentration on recorded signals. To fulfill this objective, chaotic methods were employed; Higuchi dimension and correlation dimension. The results of the study indicate channels whose chaotic features are significantly different among people with various levels of hypnotizability and a great consistency exists among channels involved in each task with brain lobes' functions.

Published in:

Biomedical Engineering (ICBME), 2010 17th Iranian Conference of

Date of Conference:

3-4 Nov. 2010