Stable Scalp EEG Spatiospectral Patterns Across Paradigms Estimated by Group ICA

René Labounek, David A. Bridwell, Radek Mareček, Martin Lamoš, Michal Mikl, Tomáš Slavíček, Petr Bednařík, Jaromír Baštinec, Petr Hluštík, Milan Brázdil, Jiří Jan

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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.

Original languageEnglish (US)
Pages (from-to)76-89
Number of pages14
JournalBrain Topography
Issue number1
StatePublished - Jan 1 2018


  • EEG
  • ICA
  • Multi-subject blind source separation
  • Resting-state
  • Semantic decision
  • Spatiospectral patterns
  • Visual oddball

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    Labounek, R., Bridwell, D. A., Mareček, R., Lamoš, M., Mikl, M., Slavíček, T., Bednařík, P., Baštinec, J., Hluštík, P., Brázdil, M., & Jan, J. (2018). Stable Scalp EEG Spatiospectral Patterns Across Paradigms Estimated by Group ICA. Brain Topography, 31(1), 76-89.