Publication details

Stable Scalp EEG Spatiospectral Patterns Across Paradigms Estimated by Group ICA

Title in English Stable Scalp EEG Spatiospectral Patterns Across Paradigms Estimated by Group ICA
Authors

LABOUNEK René BRIDWELL D.A. MAREČEK Radek LAMOŠ Martin MIKL Michal SLAVÍČEK Tomáš BEDNAŘÍK Petr BASTINEC J. HLUSTIK P. BRÁZDIL Milan JAN J.

Year of publication 2018
Type Article in Periodical
Magazine / Source BRAIN TOPOGRAPHY
MU Faculty or unit

Central European Institute of Technology

Citation
Doi http://dx.doi.org/10.1007/s10548-017-0585-8
Keywords EEG; ICA; Spatiospectral patterns; Multi-subject blind source separation; Resting-state; Semantic decision; Visual oddball
Description Electroencephalography (EEG) oscillations reflect the superposition of different cortical sources with potentially different frequencies. Various blind source separation (BSS) approaches have been developed and implemented in order to decompose these oscillations, and a subset of approaches have been developed for decomposition of multi-subject data. Group independent component analysis (Group ICA) is one such approach, revealing spatiospectral maps at the group level with distinct frequency and spatial characteristics. The reproducibility of these distinct maps across subjects and paradigms is relatively unexplored domain, and the topic of the present study. To address this, we conducted separate group ICA decompositions of EEG spatiospectral patterns on data collected during three different paradigms or tasks (resting-state, semantic decision task and visual oddball task). K-means clustering analysis of back-reconstructed individual subject maps demonstrates that fourteen different independent spatiospectral maps are present across the different paradigms/tasks, i.e. they are generally stable.
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