xDAWN algorithm to enhance evoked potentials: application to brain-computer interface.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19174332.
- Also identified by DOI 10.1109/TBME.2009.2012869.
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Abstract
A brain-computer interface (BCI) is a communication system that allows to control a computer or any other device thanks to the brain activity. The BCI described in this paper is based on the P300 speller BCI paradigm introduced by Farwell and Donchin . An unsupervised algorithm is proposed to enhance P300 evoked potentials by estimating spatial filters; the raw EEG signals are then projected into the estimated signal subspace. Data recorded on three subjects were used to evaluate the proposed method. The results, which are presented using a Bayesian linear discriminant analysis classifier , show that the proposed method is efficient and accurate.
Medical subject headings
- Algorithms
- Brain
- Electroencephalography
- Evoked Potentials
- Man-Machine Systems
- Signal Processing, Computer-Assisted