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- W4384706377 abstract "Brain-Computer Interface (BCI) technologies employing electroencephalography (EEG) signals heavily depend on effective and accurate signal classification strategies. Researchers have extensively developed various machine learning (ML) algorithms. However, very little has been done to improve the user’s ability to elicit better brain patterns easily distinguishable across different stimuli. This paper proposes four feedback mechanisms through which the user trains himself for a motor imagery (MI) task via active feedback. The feedback strategies involve t-Distributed Stochastic Neighbor Embedding (t-SNE)-transformed Riemannian covariance matrices, mean correlations between C3 and C4 channels, tangent space transformed mean correlations between C3 and C4 channels and the power spectral density difference between C3 and C4 channels. Using a standard SVM classifier, the subjects showed significant improvement in MI accuracy post the training session. An increase in accuracy of more than 9% is achieved for two feedback mechanisms on an in-house dataset of 24 subjects indicating the effectiveness of proper feedback for eliciting better MI ability from users." @default.
- W4384706377 created "2023-07-20" @default.
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- W4384706377 date "2023-03-16" @default.
- W4384706377 modified "2023-10-18" @default.
- W4384706377 title "Active Feedback using Riemannian Features for Motor Imagery Classification" @default.
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- W4384706377 doi "https://doi.org/10.1109/icbsii58188.2023.10181030" @default.
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