Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
12-2004
Abstract
P300 speller is a communication tool with which one can input texts or commands to a computer by thought. The amplitude of the P300 evoked potential is inversely proportional to the probability of infrequent or task-related stimulus. In existing P300 spellers, rows and columns of a matrix are intensified successively and randomly, resulting in a stimulus frequency of 1/N (N is the number of rows or columns of the matrix). We propose a new paradigm to display each single character randomly and individually (therefore reducing the stimulus frequency to 1/(N*N)). On-line experiments showed that this new speller significantly improved the performance. Specifically, the new speller can reduce character classification error rate by up to 80% or double the information transfer rate compared to the existing P300 spellers. © 2004 IEEE.
Discipline
Databases and Information Systems | Graphics and Human Computer Interfaces
Publication
2004 IEEE International Workshop on Biomedical Circuits & Systems: Singapore, 1-3 December 2004
First Page
13
Last Page
16
ISBN
9780780386655
Identifier
10.1109/BIOCAS.2004.1454155
Publisher
IEEE
City or Country
Piscataway, NJ
Citation
GUAN, Cuntai; THULASIDAS, Manoj; and WU, Jiankang.
High performance P300 speller for brain-computer interface. (2004). 2004 IEEE International Workshop on Biomedical Circuits & Systems: Singapore, 1-3 December 2004. 13-16.
Available at: https://ink.library.smu.edu.sg/sis_research/3497
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
http://doi.org/10.1109/BIOCAS.2004.1454155
Included in
Databases and Information Systems Commons, Graphics and Human Computer Interfaces Commons