Single trial ERP reading based on parallel factor analysis

K. Vanderperren*, B. Mijovic, N. Novitskiy, B. Vanrumste, P. Stiers, B.R.H. Van den Bergh, L. Lagae, S. Sunaert, J. Wagemans, S. Van Huffel, M. De Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The extraction of task-related single trial ERP features has recently gained much interest, in particular in simultaneous EEG-fMRI applications. In this study, a specific decomposition known as parallel factor analysis (PARAFAC) was used, in order to retrieve the task-related activity from the raw signals. Using visual detection task data, acquired in normal circumstances and simultaneously with fMRI, differences between distinct task-related conditions can be captured in the trial signatures of specific PARAFAC components when applied to ERP data arranged in Channels?x?Time?x?Trials arrays, but the signatures did not correlate with the fMRI data. Despite the need for parameter tuning and careful preprocessing, the approach is shown to be successful, especially when prior knowledge about the expected ERPs is incorporated.
Original languageEnglish
Pages (from-to)97-110
Issue number1
Publication statusPublished - 1 Jan 2013

Cite this