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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Cuntai Guan Thulasidas, M. Jiankang Wu |
| Copyright Year | 2004 |
| Description | Author affiliation: Institute for Infocomm Res., Singapore (Cuntai Guan; Thulasidas, M.; Jiankang Wu) |
| 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. |
| File Size | 714725 |
| File Format | |
| ISBN | 0780386655 |
| DOI | 10.1109/BIOCAS.2004.1454155 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-12-01 |
| Publisher Place | Singapore |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Computer interfaces Error analysis Computer peripherals Optimization methods Muscles Frequency Displays Electroencephalography Brain computer interfaces Principal component analysis |
| Content Type | Text |
| Resource Type | Article |
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