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DOI: 10.14569/IJACSA.2023.0140888
PDF

Motor Imagery EEG Signals Marginal Time Coherence Analysis for Brain-Computer Interface

Author 1: Md. Sujan Ali
Author 2: Jannatul Ferdous

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 14 Issue 8, 2023.

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Abstract: The synchronization of neural activity in the human brain has great significance for coordinating its various cognitive functions. It changes throughout time and in response to frequency. The activity is measured in terms of brain signals, like an electroencephalogram (EEG). The time-frequency (TF) synchronization among several EEG channels is measured in this research using an efficient approach. Most frequently, the windowed Fourier transforms-short-time Fourier transform (STFT), as well as wavelet transform (WT), and are used to measure the TF coherence. The information provided by these model-based methods in the TF domain is insufficient. The proposed synchro squeezing transform (SST)-based TF representation is a data-adaptive approach for resolving the problem of the traditional one. It enables more perfect estimation and better tracking of TF components. The SST generates a clearly defined TF depiction because of its data flexibility and frequency reassignment capabilities. Furthermore, a non-identical smoothing operator is used to smooth the TF coherence, which enhances the statistical consistency of neural synchronization. The experiment is run using both simulated and actual EEG data. The outcomes show that the suggested SST-dependent system performs significantly better than the previously mentioned traditional approaches. As a result, the coherences dependent on the suggested approach clearly distinguish between various forms of motor imagery movement. The TF coherence can be used to measure the interdependencies of neural activities.

Keywords: Brain-Computer Interface (BCI); Electroencephalogram (EEG); Short-time Fourier Transform (STFT); Synchrosqueezing Transform (SST); time-frequency coherence

Md. Sujan Ali and Jannatul Ferdous, “Motor Imagery EEG Signals Marginal Time Coherence Analysis for Brain-Computer Interface” International Journal of Advanced Computer Science and Applications(IJACSA), 14(8), 2023. http://dx.doi.org/10.14569/IJACSA.2023.0140888

@article{Ali2023,
title = {Motor Imagery EEG Signals Marginal Time Coherence Analysis for Brain-Computer Interface},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2023.0140888},
url = {http://dx.doi.org/10.14569/IJACSA.2023.0140888},
year = {2023},
publisher = {The Science and Information Organization},
volume = {14},
number = {8},
author = {Md. Sujan Ali and Jannatul Ferdous}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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