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Semi-supervised adaptation in ssvep-based brain-computer interface using tri-training

Thomas Bender, Troels W Kjaer, Carsten E Thomsen, Helge B D Sorensen, Sadasivan Puthusserypady

3 Citations (Scopus)

Abstract

This paper presents a novel and computationally simple tri-training based semi-supervised steady-state visual evoked potential (SSVEP)-based brain-computer interface (BCI). It is implemented with autocorrelation-based features and a Naïve-Bayes classifier (NBC). The system uses nine characters presented on a 100 Hz CRT-monitor, three scalp electrodes for signal acquisition, a gUSB-amp for preamplification and two PCs for data-processing and stimulus control respectively. Preliminary test results of the system on nine healthy subjects, with and without tri-training, indicates that the accuracy improves as a result of tri-training.

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