| Spatial filters to detect steady-state visual evoked potentials elicited by high frequency stimulation: BCI application. | |
| | |
MedLine Citation:
|
PMID: 20415628 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Abstract Brain-computer interfaces (BCIs) based on steady-state visual evoked potentials (SSVEPs) require minimal user training and can offer higher information throughput compared to other BCI modalities. We focused on SSVEPs elicited by high-frequency stimuli (>30 Hz) because they cause minimal fatigue/annoyance and reduce the risk of inducing photoepileptic seizures. This paper presents an approach that analyzes electroencephalographic activity to automatically obtain the optimum spatial filter for detecting the SSVEP at a given stimulation frequency from a short signal where the stimulation is presented at intermittent periods interspersed with breaks. A vector space generated by sinusoidal signals at the stimulation frequency and harmonics is defined. The spatial filter coefficients result from maximizing the ratio between the energy of the spatially filtered signal and that of its orthogonal component with regard to the vector space. The spatial filters are customized for each BCI user through a short calibration procedure taking into account individual specificity. Our experiments on six subjects applying the spatial filters resulted in an average transfer rate ranging from 20.9 to 22.7 bits/min. |
| | |
Authors:
|
Gary Garcia Molina; Vojkan Mihajlovic |
Related Documents
:
|
19495178 - High efficient superresolution combination filter with twin lcd spatial light modulators. 6191958 - Detection of reaction time by an adaptive filter based on the least squares fit. 20309278 - Light absorption by airborne aerosols: comparison of integrating plate and spectrophone... 9637038 - The role of auditory filters in comodulation masking release (cmr). 2335768 - Modeling signal features of escape response: effects of cessation conditioning in "lear... 7357868 - Detection of the pre-ovulatory period using a vaginal probe in the home. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Biomedizinische Technik. Biomedical engineering Volume: 55 ISSN: 1862-278X ISO Abbreviation: Biomed Tech (Berl) Publication Date: 2010 Jun |
Date Detail:
|
Created Date: 2010-06-09 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 1262533 Medline TA: Biomed Tech (Berl) Country: Germany |
Other Details:
|
Languages: eng Pagination: 173-82 Citation Subset: IM |
Affiliation:
|
Philips Research Europe, Eindhoven, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Topical piperacillin/tazobactam for recalcitrant pseudomonas aeruginosa keratitis.
Next Document: Spectral features of EEG in depression.