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Communication Dans Un Congrès Année : 2011

A Non-Orthogonal SVD-based Decomposition for Phase Invariant Error-Related Potential Estimation

Résumé

The estimation of the Error Related Potential from a set of trials is a challenging problem. Indeed, the Error Related Potential is of low amplitude compared to the ongoing electroencephalographic activity. In addition, simple summing over the different trials is prone to errors, since the waveform does not appear at an exact latency with respect to the trigger. In this work, we propose a method to cope with the discrepancy of these latencies of the Error Related Potential waveform and offer a framework in which the estimation of the Error Related Potential waveform reduces to a simple Singular Value Decomposition of an analytic waveform representation of the observed signal. The followed approach is promising, since we are able to explain a higher portion of the variance of the observed signal with fewer components in the expansion.
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Dates et versions

hal-00641447 , version 1 (21-11-2011)
hal-00641447 , version 2 (22-11-2011)

Identifiants

Citer

Ronald Phlypo, Nisrine Jrad, Sandra Rousseau, Marco Congedo. A Non-Orthogonal SVD-based Decomposition for Phase Invariant Error-Related Potential Estimation. EMBC 2011 - 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Armentano Ricardo and Hudson Donna, Aug 2011, Boston, MA, United States. pp.6963-6966, ⟨10.1109/IEMBS.2011.6091760⟩. ⟨hal-00641447v2⟩
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