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

2009

Article

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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.

Author(s): Martens, SMM. and Hill, NJ. and Farquhar, J. and Schölkopf, B.
Journal: Journal of Neural Engineering
Volume: 6
Number (issue): 2
Pages: 1-9
Year: 2009
Month: April
Day: 0

Department(s): Empirical Inference
Bibtex Type: Article (article)

DOI: 10.1088/1741-2560/6/2/026003
EPUB: 026003
Language: en
Organization: Max-Planck-Gesellschaft
School: Biologische Kybernetik

Links: PDF

BibTex

@article{5745,
  title = {Overlap and refractory effects in a Brain-Computer Interface speller based on the visual P300 Event-Related Potential},
  author = {Martens, SMM. and Hill, NJ. and Farquhar, J. and Sch{\"o}lkopf, B.},
  journal = {Journal of Neural Engineering},
  volume = {6},
  number = {2},
  pages = {1-9},
  organization = {Max-Planck-Gesellschaft},
  school = {Biologische Kybernetik},
  month = apr,
  year = {2009},
  month_numeric = {4}
}