Comparison of classification methods for P300 brain-computer interface on disabled subjects

  • Authors:
  • Nikolay V. Manyakov;Nikolay Chumerin;Adrien Combaz;Marc M. Van Hulle

  • Affiliations:
  • Laboratorium voor Neuro- en Psychofysiologie, K.U. Leuven, Leuven, Belgium;Laboratorium voor Neuro- en Psychofysiologie, K.U. Leuven, Leuven, Belgium;Laboratorium voor Neuro- en Psychofysiologie, K.U. Leuven, Leuven, Belgium;Laboratorium voor Neuro- en Psychofysiologie, K.U. Leuven, Leuven, Belgium

  • Venue:
  • Computational Intelligence and Neuroscience - Special issue on Selected Papers from the 4th International Conference on Bioinspired Systems and Cognitive Signal Processing
  • Year:
  • 2011

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Abstract

We report on tests with a mind typing paradigm based on a P300 brain-computer interface (BCI) on a group of amyotrophic lateral sclerosis (ALS), middle cerebral artery (MCA) stroke, and subarachnoid hemorrhage (SAH) patients, suffering from motor and speech disabilities. We investigate the achieved typing accuracy given the individual patient's disorder, and how it correlates with the type of classifier used. We considered 7 types of classifiers, linear as well as nonlinear ones, and found that, overall, one type of linear classifier yielded a higher classification accuracy. In addition to the selection of the classifier, we also suggest and discuss a number of recommendations to be considered when building a P300-based typing system for disabled subjects.