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Combined optimization of spatial and temporal filters for improving brain-computer interfacing
- Brain-computer interface (BCI) systems create a novel communication channel from the brain to an output de ice by bypassing conventional motor output pathways of nerves and muscles. Therefore they could provide a new communication and control option for paralyzed patients. Modern BCI technology is essentially based on techniques for the classification of single-trial brain signals. Here we present a novel technique that allows the simultaneous optimization of a spatial and a spectral filter enhancing discriminability rates of multichannel EEG single-trials. The evaluation of 60 experiments involving 22 different subjects demonstrates the significant superiority of the proposed algorithm over to its classical counterpart: the median classification error rate was decreased by 11%. Apart from the enhanced classification, the spatial and/or the spectral filter that are determined by the algorithm can also be used for further analysis of the data, e.g., for source localization of the respective brain rhythms.
Author details: | Guido Dornhege, Benjamin BlankertzGND, Matthias Krauledat, Florian LoschORCiDGND, Gabriel Curio, Klaus-Robert MüllerORCiDGND |
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DOI: | https://doi.org/10.1109/TBME.2006.883649 |
ISSN: | 0018-9294 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/17073333 |
Title of parent work (English): | IEEE transactions on bio-medical electronics |
Publisher: | IEEE |
Place of publishing: | New York |
Publication type: | Article |
Language: | English |
Date of first publication: | 2006/10/16 |
Publication year: | 2006 |
Release date: | 2020/05/04 |
Tag: | EEG; brain-computer interface; common spatial patterns; event-related desynchronization; single-trial-analysis |
Volume: | 53 |
Issue: | 11 |
Number of pages: | 8 |
First page: | 2274 |
Last Page: | 2281 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Informatik und Computational Science |
DDC classification: | 0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme |
Peer review: | Referiert |
Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Informatik |