Detection of Movement Intention in EEG-Based Brain-Computer Interfaces Using Fourier-Based Synchrosqueezing Transform
| Autor: | Bulent Yilmaz, Nedime Karakullukcu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.diagnostic_test
Computer Networks and Communications business.industry Computer science Movement Feature extraction Electroencephalography Feature selection Pattern recognition Intention General Medicine Support vector machine Motor imagery Feature (computer vision) Brain-Computer Interfaces Imagination medicine Humans Artificial intelligence Noise (video) business Algorithms Brain–computer interface |
| Zdroj: | International Journal of Neural Systems. 32 |
| ISSN: | 1793-6462 0129-0657 |
| DOI: | 10.1142/s0129065721500593 |
| Popis: | © 2022 World Scientific Publishing Company.Patients with motor impairments need caregivers' help to initiate the operation of brain-computer interfaces (BCI). This study aims to identify and characterize movement intention using multichannel electroencephalography (EEG) signals as a means to initiate BCI systems without extra accessories/methodologies. We propose to discriminate the resting and motor imagery (MI) states with high accuracy using Fourier-based synchrosqueezing transform (FSST) as a feature extractor. FSST has been investigated and compared with other popular approaches in 28 healthy subjects for a total of 6657 trials. The accuracy and f-measure values were obtained as 99.8% and 0.99, respectively, when FSST was used as the feature extractor and singular value decomposition (SVD) as the feature selection method and support vector machines as the classifier. Moreover, this study investigated the use of data that contain certain amount of noise without any preprocessing in addition to the clean counterparts. Furthermore, the statistical analysis of EEG channels with the best discrimination (of resting and MI states) characteristics demonstrated that F4-Fz-C3-Cz-C4-Pz channels and several statistical features had statistical significance levels, p, less than 0.05. This study showed that the preparation of the movement can be detected in real-time employing FSST-SVD combination and several channels with minimal pre-processing effort. |
| Databáze: | OpenAIRE |
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