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Adaptive frequency decomposition of EEG with subsequent expert system analysis

MPG-Autoren
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Herrmann,  Christoph S.
MPI of Cognitive Neuroscience (Leipzig, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Arnold,  Thomas
MPI of Cognitive Neuroscience (Leipzig, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Zitation

Herrmann, C. S., Arnold, T., Visbeck, A., Hundemer, H. P., & Hopf, H. C. (2001). Adaptive frequency decomposition of EEG with subsequent expert system analysis. Computers in Biology and Medicine (Elmsford, NY), 31(6), 407-427. doi:10.1016/S0010-4825(01)00017-8.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-9AEC-C
Zusammenfassung
We present a hybrid system for automatic analysis of clinical routine EEG, comprising a spectral analysis and an expert system. EEG raw data are transformed into the time–frequency domain by the so-called adaptive frequency decomposition. The resulting frequency components are converted into pseudo-linguistic facts via fuzzification. Finally, an expert system applies symbolic rules formulated by the neurologist to evaluate the extracted EEG features. The system detects artefacts, describes alpha rhythm by frequency, amplitude, and stability and after artefact rejection detects pathologic slow activity. All results are displayed as linguistic terms, numerical values and maps of temporal extent, giving an overview about the clinical routine EEG.