Abstract
Canonical correlation analysis (CCA) is one of the most used algorithms in the steady-state visual evoked potentials (SSVEP)-based brain-computer interface (BCI) systems due to its simplicity, efficiency, and robustness. Researchers have proposed modifications to CCA to improve its speed, allowing high-speed spelling and thus a more natural communication. In this work, we combine two approaches, the filter-bank (FB) approach to extract more information from the harmonics, and a range of different supervised methods which optimize the reference signals to improve the SSVEP detection. The proposed models are tested on the publicly available benchmark dataset for SSVEP-based BCIs and the results show improved performance compared to the state-of-the-art methods and, in particular, the proposed FBMwayCCA approach achieves the best results with an information transfer rate (ITR) of 134.8±8.4 bits/minute. This study indeed suggests the feasibility of combining the fundamental and harmonic SSVEP components with supervised methods in target identification to develop high-speed BCI spellers.
Original language | English |
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Title of host publication | Proceedings of 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society |
Publisher | IEEE |
Publication date | 2021 |
Pages | 337-340 |
ISBN (Print) | 978-1-7281-1180-3 |
DOIs | |
Publication status | Published - 2021 |
Event | 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Virtual event Duration: 1 Nov 2021 → 5 Nov 2021 |
Conference
Conference | 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society |
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Location | Virtual event |
Period | 01/11/2021 → 05/11/2021 |