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Conference Papers Year : 2012

Finally, what is the best filter for P300 detection?

Laurent Bougrain
Carolina Saavedra
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Radu Ranta
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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 and versions

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


  • HAL Id : hal-00756669 , version 1


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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