Brain Evoked Response Qualification Using Multi-Set Consensus Clustering : Toward Single-Trial EEG Analysis
Mahini, R., Zhang, G., Parviainen, T., Düsing, R., Nandi, A. K., Cong, F., & Hämäläinen, T. (2024). Brain Evoked Response Qualification Using Multi-Set Consensus Clustering : Toward Single-Trial EEG Analysis. Brain Topography, Early online. https://doi.org/10.1007/s10548-024-01074-y
Julkaistu sarjassa
Brain TopographyTekijät
Päivämäärä
2024Tekijänoikeudet
© 2024 the Authors
In event-related potential (ERP) analysis, it is commonly assumed that individual trials from a subject share similar properties and originate from comparable neural sources, allowing reliable interpretation of group-averages. Nevertheless, traditional group-level ERP analysis methods, including cluster analysis, often overlook critical information about individual subjects’ neural processes due to using fixed measurement intervals derived from averaging. We developed a multi-set consensus clustering pipeline to examine cognitive processes at the individual subject level. Initially, consensus clustering from diverse methods was applied to single-trial EEG epochs of individual subjects. Subsequently, a second level of consensus clustering was performed across the trials of each subject. A newly modified time window determination method was then employed to identify individual subjects’ ERP(s) of interest. We validated our method with simulated data for ERP components N2 and P3, and real data from a visual oddball task to confirm the P3 component. Our findings revealed that estimated time windows for individual subjects provide precise ERP identification compared to fixed time windows across all subjects. Additionally, Monte Carlo simulations with synthetic single-trial data demonstrated stable scores for the N2 and P3 components, confirming the reliability of our method. The proposed method enhances the examination of brain-evoked responses at the individual subject level by considering single-trial EEG data, thereby extracting mutual information relevant to the neural process. This approach offers a significant improvement over conventional ERP analysis, which relies on the averaging mechanism and fixed measurement interval.
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Springer NatureISSN Hae Julkaisufoorumista
0896-0267Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/233540931
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The authors have no relevant financial or non-financial interests to disclose. The authors have no funding for this study. Open Access funding provided by University of Jyväskylä (JYU).Lisenssi
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