Buchumschlag

Front-end Replication Dynamic Window (FRDW) for Online Motor Imagery Classification

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Veröffentlicht in:arXiv.org (Dec 12, 2024), p. n/a
1. Verfasser: Chen, X
Weitere Verfasser: J An, H Wu, S Li, Liu, B, D Wu
Veröffentlicht:
Cornell University Library, arXiv.org
Schlagworte:
Information transfer
Data augmentation
Algorithms
Replication
Electroencephalography
Classification
Decoding
Human-computer interface
Imagery
Windows (computer programs)
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Abstract:Motor imagery (MI) is a classical paradigm in electroencephalogram (EEG) based brain-computer interfaces (BCIs). Online accurate and fast decoding is very important to its successful applications. This paper proposes a simple yet effective front-end replication dynamic window (FRDW) algorithm for this purpose. Dynamic windows enable the classification based on a test EEG trial shorter than those used in training, improving the decision speed; front-end replication fills a short test EEG trial to the length used in training, improving the classification accuracy. Within-subject and cross-subject online MI classification experiments on three public datasets, with three different classifiers and three different data augmentation approaches, demonstrated that FRDW can significantly increase the information transfer rate in MI decoding. Additionally, FR can also be used in training data augmentation. FRDW helped win national champion of the China BCI Competition in 2022.
ISSN:2331-8422
DOI:10.1109/TNSRE.2023.3321640
Quelle:Engineering Database