The aim of this study is to provide a comprehensive test of three spatial speller settings, for the auditory, visual, and audiovisual paradigms. For rigour, the study is conducted with 16 BCI-na\"ive subjects in an experimental set-up based on five Japanese hiragana characters. Auditory P300 responses give encouragingly longer target vs. non-target latencies during the training phase, however, real-world online BCI experiments in the multimodal setting do not validate this potential advantage. Our case studies indicate that the auditory spatial unimodal paradigm needs further development in order to be a viable alternative to the established visual domain speller applications, as far as BCI-na\"ive subjects are concerned.
@article{arxiv.1301.6360,
title = {Comparison of P300 Responses in Auditory, Visual and Audiovisual Spatial Speller BCI Paradigms},
author = {M. Chang and N. Nishikawa and Z. R. Struzik and K. Mori and S. Makino and D. Mandic and T. M. Rutkowski},
journal= {arXiv preprint arXiv:1301.6360},
year = {2013}
}
Comments
Proceedings of the Fifth International Brain-Computer Interface Meeting 2013, 2 pages, 1 figure