Design of an auditory P300 BCI speller for the Japanese Hiragana syllabary

An Evaluation of Training with an Auditory P300 Brain-Computer Interface for the Japanese Hiragana Syllabary

Gaze-independent brain-computer interfaces (BCIs) are a possible communication channel for persons with paralysis. We investigated if it is possible to use auditory stimuli to create a BCI for the Japanese Hiragana syllabary, which has 46 Hiragana characters. Additionally, we investigated if training has an effect on accuracy despite the high amount of different stimuli involved. Able-bodied pa...

Semi-Supervised Clustering Approach for P300 based BCI Speller Systems

The paper presents a k-means based semi-supervised clustering approach for recognizing and classifying P300 signals for BCI Speller System. P300 signals are proved to be the most suitable Event Related Potential (ERP) signal, used to develop the BCI systems. Due to non-stationary nature of ERP signals, the wavelet transform is the best analysis tool for extracting informative features from P300...

Comparison of P300 Responses in Auditory, Visual and Audiovisual Spatial Speller BCI Paradigms

Audiovisual Spatial Speller BCI Paradigms M. Chang, N. Nishikawa, Z.R. Struzik, K. Mori, S. Makino, D. Mandic, and T.M. Rutkowski Life Science Center of TARA, University of Tsukuba, Japan; RIKEN Brain Science Institute, Wako-shi, Japan; The University of Tokyo, Tokyo, Japan; Research Institute of National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan; Imperial College L...

Ensemble SWLDA Classifiers for the P300 Speller

The P300 Speller has proven to be an effective paradigm for braincomputer interface (BCI) communication. Using this paradigm, studies have shown that a simple linear classifier can perform as well as more complex nonlinear classifiers. Several studies have examined methods such as Fisher’s Linear Discriminant (FLD), Stepwise Linear Discriminant Analysis (SWLDA), and Support Vector Machines (SVM...

Fast online adaptivity with policy gradient: example of the BCI "P300"-speller