Abstract
Neuronal excitation enables identifying the features of an electroencephalogram (EEG) signal for motor imagery detection. We propose a novel feature extraction algorithm supported by short-term cepstrum-based inverse filtration of neuronal excitation of the active synapse. The maximum power of the estimated neuronal excitation is subjected to a two-class Bayesian probabilistic classifier. The feature extraction algorithm with the Bayesian probabilistic classifier significantly improves the brain–computer interface performance compared with that of other conventional methods of EEG signal processing such as wavelet with a Bayesian classifier, autocorrelation and CSP filter with a naïve Bayes classifier over the BCI competition II and IV datasets. Consequently, this neuronal excitation feature allows the authors to develop a motor imagery neuro-feedback system; the performance of which achieves 87.2% average classification accuracy, which is 14% greater than that of the wavelet-based algorithm and 6.2% greater than that of the TRSP-based algorithm, with 53 ms of processing time allotted for each instruction in a real-time experiment. However, brain signal variation across different subjects and sessions significantly impairs decision accuracy. Our neuronal excitation base feature extraction algorithm minimizes these variations in classification accuracy.
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05 January 2022
An Editorial Expression of Concern to this paper has been published: https://doi.org/10.1007/s12243-021-00905-4
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Bhattacharyya, S., Mukul, M.K., Luhach, A.K. et al. Motor imagery-based neuro-feedback system using neuronal excitation of the active synapses. Ann. Telecommun. 76, 413–428 (2021). https://doi.org/10.1007/s12243-019-00740-8
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DOI: https://doi.org/10.1007/s12243-019-00740-8