Comparison of methods for clustering independent EEG components in healthy subjects and patients with postconcussion syndrome after traumatic brain injury

Autor: O. E. Gurskaya, Valery A. Ponomarev, A. Müller, Yu. D. Kropotov, L. V. Artjushkova
Rok vydání: 2010
Předmět:
Zdroj: Human Physiology. 36:123-131
ISSN: 1608-3164
0362-1197
DOI: 10.1134/s0362119710020015
Popis: The efficiencies of three clustering methods for independent components of 19-channel baseline EEG in location of pathological cerebral activity sources were compared. The samples comprised 518 healthy subjects and 87 patients with postconcussion syndrome after traumatic brain injury (TBI). Clustering of independent component topographies, the spatial coordinates of equivalent dipole sources corresponding to independent component topographies, and locations of the maximums of the equivalent source current density calculated by standardized low resolution electromagnetic tomography (sLORETA) were compared. A comparison of the power spectra of independent components showed a significant increase in the EEG power in the Δ, θ, and α bands for sources located in the frontal and temporal lobes of TBI patients compared to healthy subjects. The method of clustering of independent component topographies proved to be the most sensitive of the methods compared.
Databáze: OpenAIRE
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