2024-03-28T23:03:43Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00018760
2023-01-16T04:07:38Z
320:502:503
Improvement of spelling speed in P300 speller using transition probability of letters
Samizo, Eri
54726
Yoshikawa, Tomohiro
54727
Furuhashi, Takeshi
54728
Brain-Computer Interfaces (BCIs) control a computer or a machine based on the information of the signal of human's brain, and P300 speller is one of the BCI communication tools, which uses P300 as the feature quantity and allows users to select letters just by thinking. Because of the low signal-to-noise ratio of the P300, signal averaging is often performed to improve the spelling accuracy instead of the degradation of the spelling speed. In texts, there is some variability in the transition probabilities between letters. This paper proposes P300 speller considering the frequencies and the transition probabilities as the priori probabilities. It shows that the spelling speed is improved by the proposed method comparing with the conventional method.
2012 Joint 6th International Conference on Soft Computing and Intelligent Systems (SCIS) and 13th International Symposium on Advanced Intelligent Systems (ISIS) (SCIS-ISIS 2012). November 20-24, 2012, Kobe, Japan
journal article
IEEE
2012-11
application/pdf
2012 Joint 6th International Conference on Soft Computing and Intelligent Systems (SCIS) and 13th International Symposium on Advanced Intelligent Systems (ISIS)
163
166
http://dx.doi.org/10.1109/SCIS-ISIS.2012.6505350
http://hdl.handle.net/2237/20856
https://nagoya.repo.nii.ac.jp/record/18760/files/47-Improvement_of_spelling_speed_in_P300_speller.pdf
eng
https://doi.org/10.1109/SCIS-ISIS.2012.6505350
978-1-4673-2742-8
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