Document Type
Article
Original Publication Date
2015
Journal/Book/Conference Title
PLOS One
Volume
10
Issue
6
DOI of Original Publication
10.1371/journal.pone.0130325
Date of Submission
December 2015
Abstract
Background
A recent study showed improved performance of the P300-speller when the flashing row or column was overlaid with translucent pictures of familiar faces (FF spelling paradigm). However, the performance of the P300-speller is not yet satisfactory due to its low classification accuracy and information transfer rate.
Objective
To investigate whether P300-speller performance is further improved when the chromatic property and the FF spelling paradigm are combined.
Methods
We proposed a new spelling paradigm in which the flashing row or column is overlaid with translucent green pictures of familiar faces (GFF spelling paradigm). We analyzed the ERP waveforms elicited by the FF and proposed GFF spelling paradigms and compared P300-speller performance between the two paradigms.
Results
Significant differences in the amplitudes of four ERP components (N170, VPP, P300, and P600f) were observed between both spelling paradigms. Compared to the FF spelling paradigm, the GFF spelling paradigm elicited ERP waveforms of higher amplitudes and resulted in improved P300-speller performance.
Conclusions
Combining the chromatic property (green color) and the FF spelling paradigm led to better classification accuracy and an increased information transfer rate. These findings demonstrate a promising new approach for improving the performance of the P300-speller.
Rights
Copyright: © 2015 Li et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Is Part Of
VCU Computer Science Publications
Comments
Originally published at http://dx.doi.org/10.1371/journal.pone.0130325