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Communication Dans Un Congrès Année : 2012

Finally, what is the best filter for P300 detection?

Laurent Bougrain
Carolina Saavedra
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Radu Ranta

Résumé

According to recent literature, the most appropriate preprocessing to improve P300 detection is still unknown or at least there is no consensus about it. Research papers refer to different low-pass filters, high-pass filters, baseline, subsampling or feature selection. In this paper, using a database with 23 healthy subjects we compare the effect on the letter accuracy (single-trial detection) provided by a linear support vector machine of a high-pass filter with cutoff frequencies from 0.1 to 1 Hz and a low-pass filter with cutoff frequencies from 8 to 60 Hz. According to this study, the best combination is for a band-pass filter of 0.1 to 15 Hz.
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Dates et versions

hal-00756669 , version 1 (26-11-2012)

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  • HAL Id : hal-00756669 , version 1

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Laurent Bougrain, Carolina Saavedra, Radu Ranta. Finally, what is the best filter for P300 detection?. TOBI Workshop lll- Tools for Brain-Computer Interaction - 2012, Mar 2012, Würzburg, Germany. ⟨hal-00756669⟩
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