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Nonlinear analysis of EEG in various mental states of normal persons

Title
Nonlinear analysis of EEG in various mental states of normal persons
Authors
Chae S.-H.Oh J.-Y.Choi K.-G.Kim E.-S.Kim J.-S.
Ewha Authors
최경규오지영
SCOPUS Author ID
최경규scopus; 오지영scopus
Issue Date
2002
Journal Title
Neurology Psychiatry and Brain Research
ISSN
0941-9500JCR Link
Citation
vol. 10, no. 1, pp. 7 - 14
Indexed
SCOPUS WOS scopus
Abstract
Fractal dimension and Lyapunov exponent analysis of digital EEG data was performed to compare differences among various mental activities and for determining the significance of chaotic patterns. Different kinds of tasks were performed while EEG recordings were being made. These tasks including opening and closing eyelids, calculation, listening to music, and remembering pictures. For more than one minute, signals of each performed task were recorded as a digital EEG. CHASIM (our own software) was used to calculate the fractal dimension and Lyapunov exponent. Statistical analysis was performed in GLM repeated measures using SPSS 10.0 for Windows. Fractal dimensions were high during the activities of "listening to music and noise" and "moving both toes". Fractal dimensions were low during "eye opening" and "memorizing the pictures" activities. We suggest the auditory stimulation gave more widespread brain activities than other stimulation including calculation and visual stimulation.
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의학전문대학원 > 의학과 > Journal papers
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