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OVME-REG: Harris hawks optimization algorithm based optimized variational mode extraction for eye blink artifact removal from EEG signal

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Abstract

The electroencephalogram (EEG) recordings from the human brain are useful for detecting various brain syndromes. These recordings are typically contaminated by high amplitude eye blink artifacts, which leads to deliberate misinterpretation of the EEG signal. Recently, variational mode extraction (VME) has been used to detect eye blink artifacts. But, the VME performance is impacted by the balancing parameter and center frequency selection. Therefore, this research uses two metaheuristic algorithms, particle swarm optimization and Harris hawks optimization, to determine the optimal set of the VME parameters. In the proposed method, the optimized VME (OVME) extracts the desired mode to locate the eye blink artifactual intervals. Then, the regression analysis (REG) filters the identified artifactual intervals from short EEG data segments. The significance of the proposed OVME-REG algorithm is that it is adequate for determining the optimum values of the VME algorithm. The analysis is carried out on the CHB-MIT Scalp EEG, BCI Competition, and EEG motor movement/imagery datasets. The proposed OVME-REG method provides an improved performance for suppressing single and repeated eye blink artifacts as compared to the current approaches in terms of (a) high correlation coefficient (93.08%, 87.3%, 82.17%), respectively, (b) low value of RRMSE (0.379, 0.506, 0.502), respectively, (c) high SSIM (0.892, 0.842, 0.694), and (d) low computation time and better preservation of the EEG data.

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Acknowledgements

The authors are thankful to Prof. M. N. S. Swamy, Concordia University, Canada, for his constructive suggestions to improve the presentation of the manuscript. Also, the authors are thankful to the anonymous reviewers for their insightful suggestions to improve the quality of the manuscript.

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Authors and Affiliations

  1. Department of Communication Engineering, School of Electronics Engineering, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India

    Bommala Silpa & Malaya Kumar Hota

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  1. Bommala Silpa
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  2. Malaya Kumar Hota
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Contributions

BS: investigation, methodology, software, validation, visualization, writing — original draft, writing — review and editing.

MKH: investigation, methodology, project administration, resources, software, supervision, validation, visualization, writing — original draft, writing — review and editing.

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Correspondence to Malaya Kumar Hota.

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Silpa, B., Hota, M.K. OVME-REG: Harris hawks optimization algorithm based optimized variational mode extraction for eye blink artifact removal from EEG signal. Med Biol Eng Comput 62, 955–972 (2024). https://doi.org/10.1007/s11517-023-02976-y

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