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Lutz Leistritz, Peter Putsche, Karin Schwab, Wolfram Hesse, Thomas Süße, Jens Haueisen, Herbert Witte
Coupled oscillators for modeling and analysis of EEG/MEG oscillations
Keywords: coupled oscillators, EEG, MEG, model-based signal analysis, parameter identification
This study presents three EEG/MEG applications in which the modeling of oscillatory signal components offers complementary analysis and an improved explanation of the underlying generator structures. Coupled oscillator networks were used for modeling. Parameters of the corresponding ordinary coupled differential equation (ODE) system are identified using EEG/MEG data and the resulting solution yields the modeled signals. This model-related analysis strategy provides information about the coupling quantity and quality between signal components (example 1, neonatal EEG during quiet sleep), allows identification of the possible contribution of hidden generator structures (example 2, 600-Hz MEG oscillations in somatosensory evoked magnetic fields), and can explain complex signal characteristics such as amplitude-frequency coupling and frequency entrainment (example 3, EEG burst patterns in sedated patients).
Biomedizinische Technik, Walter de Gruyter
Print ISSN: 0013-5585
Volume: 52, 02/2007
Pages: 83 - 89