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  Overlap and refractory effects in a Brain-Computer Interface speller based on the visual P300 Event-Related Potential

Martens, S., Hill, N., Farquhar, J., & Schölkopf, B. (2009). Overlap and refractory effects in a Brain-Computer Interface speller based on the visual P300 Event-Related Potential. Journal of Neural Engineering, 6(2): 026003, pp. 1-9. doi:10.1088/1741-2560/6/2/026003.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C52B-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-C814-6
Genre: Journal Article

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 Creators:
Martens, SMM1, 2, Author              
Hill, NJ1, 2, Author              
Farquhar, J, Author              
Schölkopf, B1, 2, Author              
Affiliations:
1Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497795              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: We reveal the presence of refractory and overlap effects in the event-related potentials in visual P300 speller datasets, and we show their negative impact on the performance of the system. This finding has important implications for how to encode the letters that can be selected for communication. However, we show that such effects are dependent on stimulus parameters: an alternative stimulus type based on apparent motion suffers less from the refractory effects and leads to an improved letter prediction performance.

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 Dates: 2009-04
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1088/1741-2560/6/2/026003
BibTex Citekey: 5745
 Degree: -

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Title: Journal of Neural Engineering
Source Genre: Journal
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Publ. Info: Bristol : Institute of Physics Publishing
Pages: - Volume / Issue: 6 (2) Sequence Number: 026003 Start / End Page: 1 - 9 Identifier: ISSN: 1741-2552
CoNE: https://pure.mpg.de/cone/journals/resource/17412552