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A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory

Publication ,  Conference
Mainsah, BO; Collins, LM; Reeves, G; Throckmorton, CS
Published in: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
June 16, 2017

The P300-based brain-computer interface (BCI) speller relies on eliciting and detecting specific brain responses to target stimulus events, termed event-related potentials (ERPs). In a visual speller, ERPs are elicited when the user's desired character, i.e. the 'target,' is flashed on a computer screen. The P300 speller is currently limited by its relatively slow typing speed due to the need for repetitive data measurements that are necessary to achieve reasonable signal-to-noise ratios. In addition, refractory effects limit the ability to elicit ERPs with every target stimulus event presentation. In this paper, we present a new method to design the stimulus presentation paradigm for the P300 speller by exploiting an information-theoretic approach to maximize the information content that is presented to the user while also mitigating refractory effects. We present results with real-time BCI use which demonstrate significant performance improvements with our performance-based paradigm compared to the conventional stimulus presentation paradigm.

Duke Scholars

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

1520-6149

ISBN

9781509041176

Publication Date

June 16, 2017

Start / End Page

3026 / 3030
 

Citation

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MLA
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Mainsah, B. O., Collins, L. M., Reeves, G., & Throckmorton, C. S. (2017). A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (pp. 3026–3030). https://doi.org/10.1109/ICASSP.2017.7952712
Mainsah, B. O., L. M. Collins, G. Reeves, and C. S. Throckmorton. “A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory.” In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3026–30, 2017. https://doi.org/10.1109/ICASSP.2017.7952712.
Mainsah BO, Collins LM, Reeves G, Throckmorton CS. A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory. In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 2017. p. 3026–30.
Mainsah, B. O., et al. “A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory.” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2017, pp. 3026–30. Scopus, doi:10.1109/ICASSP.2017.7952712.
Mainsah BO, Collins LM, Reeves G, Throckmorton CS. A performance-based approach to designing the stimulus presentation paradigm for the P300-based BCI by exploiting coding theory. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 2017. p. 3026–3030.

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

1520-6149

ISBN

9781509041176

Publication Date

June 16, 2017

Start / End Page

3026 / 3030