Published: Jan. 1, 2024
Language: Английский
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: May 2, 2025
Mental disorders represent a critical global health challenge that affects millions around the world and significantly disrupts daily life. Early accurate detection is paramount for timely intervention, which can lead to improved treatment outcomes. Electroencephalography (EEG) provides non-invasive means observing brain activity, making it useful tool detecting potential mental disorders. Recently, deep learning techniques have gained prominence their ability analyze complex datasets, such as electroencephalography recordings. In this study, we introduce novel deep-learning architecture classification of post-traumatic stress disorder, depression, or anxiety, using data. Our proposed model, multichannel convolutional transformer, integrates strengths both neural networks transformers. Before feeding model low-level features, input pre-processed common spatial pattern filter, signal space projection wavelet denoising filter. Then EEG signals are transformed continuous transform obtain time-frequency representation. The layers tokenize by our pre-processing pipeline, while Transformer encoder effectively captures long-range temporal dependencies across sequences. This specifically tailored process data has been preprocessed transform, technique representation, thereby enhancing extraction relevant features classification. We evaluated performance on three datasets: Psychiatric Dataset, MODMA dataset, Psychological Assessment dataset. achieved accuracies 87.40% 89.84% 92.28% approach outperforms every concurrent approaches datasets used, without showing any sign over-fitting. These results underscore in delivering reliable disorder through analysis, paving way advancements early diagnosis strategies.
Language: Английский
Citations
0
Biomedical Signal Processing and Control, Journal Year: 2023, Volume and Issue: 82, P. 104588 - 104588
Published: Jan. 13, 2023
Language: Английский
Citations
7
IEEE Transactions on Neural Systems and Rehabilitation Engineering, Journal Year: 2023, Volume and Issue: 31, P. 3958 - 3967
Published: Jan. 1, 2023
The limited number of brain-computer interface based on motor imagery (MI-BCI) instruction sets for different movements single limbs makes it difficult to meet practical application requirements. Therefore, designing a single-limb, multi-category (MI) paradigm and effectively decoding is one the important research directions in future development MI-BCI. Furthermore, major challenges MI-BCI difficulty classifying brain activity across individuals. In this article, transfer data learning network (TDLNet) proposed achieve cross-subject intention recognition multiclass upper limb imagery. TDLNet, Transfer Data Module (TDM) used process electroencephalogram (EEG) signals groups then fuse channel features through two one-dimensional convolutions. Residual Attention Mechanism (RAMM) assigns weights each EEG signal dynamically focuses channels most relevant specific task. Additionally, feature visualization algorithm occlusion frequency qualitatively analyze TDLNet. experimental results show that TDLNet achieves best classification datasets compared CNN-based reference methods method. 6-class scenario, obtained an accuracy 65%±0.05 UML6 dataset 63%±0.06 GRAZ dataset. demonstrate framework can produce distinct classifier patterns multiple categories frequencies. ULM6 available at https://dx.doi.org/10.21227/8qw6-f578.
Language: Английский
Citations
7
Computers in Biology and Medicine, Journal Year: 2024, Volume and Issue: 185, P. 109534 - 109534
Published: Dec. 12, 2024
Language: Английский
Citations
2
Journal of Neural Engineering, Journal Year: 2022, Volume and Issue: 19(5), P. 056008 - 056008
Published: July 27, 2022
Objective. Brain computer interface (BCI) technology is an innovative way of information exchange, which can effectively convert physiological signals into control instructions machines. Due to its spontaneity and device independence, the motor imagery (MI) electroencephalography (EEG) signal used as a common BCI source achieve direct external devices. Several online MI EEG-based systems have shown potential for rehabilitation. However, generalization ability current classification model tasks still limited real-time prototype far from widespread in practice.Approach. To solve these problems, this paper proposes optimized neural network architecture based on our previous work. Firstly, artifact components MI-EEG are removed by using threshold function related removal evaluation index, then data augmented empirical mode decomposition (EMD) algorithm. Furthermore, ensemble learning (EL) method fine-tuning strategy transfer (TL) optimize model. Finally, combined with flexible binary encoding strategy, EEG recognition results mapped commands robotic arm, realizes multiple degrees freedom arm.Main results. The show that EMD has obvious amount enhancement effect small dataset, EL TL improve intra-subject inter-subject performance, respectively. use coding expansion instructions, i.e. four kinds complete 7 arm.Significance. Our work not only improves accuracy subject generality while also extending instruction set.
Language: Английский
Citations
11
Frontiers in Neuroscience, Journal Year: 2024, Volume and Issue: 18
Published: March 28, 2024
Introduction Within the development of brain-computer interface (BCI) systems, it is crucial to consider impact brain network dynamics and neural signal transmission mechanisms on electroencephalogram-based motor imagery (MI-EEG) tasks. However, conventional deep learning (DL) methods cannot reflect topological relationship among electrodes, thereby hindering effective decoding activity. Methods Inspired by concept neuronal forward-forward (F-F) mechanism, a novel DL framework based Graph Neural Network combined mechanism (F-FGCN) presented. F-FGCN aims enhance EEG performance applying functional relationships propagation mechanism. The fusion process involves converting multi-channel into sequence signals constructing grounded Pearson correlation coeffcient, effectively representing associations between channels. Our model initially pre-trains Convolutional (GCN), fine-tunes output layer obtain feature vector. Moreover, F-F used for advanced extraction classification. Results discussion Achievement assessed PhysioNet dataset four-class categorization, compared with various classical state-of-the-art models. learned features substantially amplify downstream classifiers, achieving highest accuracy 96.11% 82.37% at subject group levels, respectively. Experimental results affirm potency FFGCN in enhancing performance, thus paving way BCI applications.
Language: Английский
Citations
2
Multimedia Tools and Applications, Journal Year: 2023, Volume and Issue: 82(29), P. 45747 - 45767
Published: Aug. 22, 2023
Language: Английский
Citations
5
Cellulose, Journal Year: 2023, Volume and Issue: unknown
Published: Nov. 25, 2023
Language: Английский
Citations
5
Biomedical Engineering Applications Basis and Communications, Journal Year: 2024, Volume and Issue: 36(04)
Published: July 3, 2024
The brain–computer interface (BCI) database’s motor assessment depends heavily on the imagery (MI) signal classification. By examining multiple patterns of different creative tasks in electroencephalogram (EEG) signals, intention humans is translated into computer-based commands MI-based signals BCI data. Nevertheless, low accuracy and efficiency are issues with MI–EEG signals’ classification because signal-to-noise ratio, huge individual differences, overall volatility, complexity signal. To overcome these problems, this research proposes a rider optimization algorithm-based neural network (ROA-based NN) to classify MI effectively. Pre-processing done after collecting dataset raw EEG signals. suitable electrodes, such as C3, C4, Cz, subsequently chosen from Using holo-entropy-based WPD feature extractor, tunable Q-factor wavelet transform (T-QWT), common spatial model, pertinent features extracted electrodes. developed examines electrode structure’s association. As result, most diverse removed electrodes before being input proposed RideNN classifier, where ride algorithm optimizes performance correctly predicts classes output that have been analyzed. classifier recognizes more accurately processes data tackles noise incomplete Utilizing parameters accuracy, sensitivity, specificity, results evaluated. PROA-based combined obtain maximum 92.24%, sensitivity 92.26%, specificity 92.14% for competition-IV 2a database. qPROA-based 92.11%, 91.98%, 92.35% 2b
Language: Английский
Citations
1
Frontiers in Neuroscience, Journal Year: 2023, Volume and Issue: 17
Published: Nov. 28, 2023
Electroencephalogram (EEG) signals are very weak and have low spatial resolution, which has led to less satisfactory accuracy in cross-subject EEG-based emotion classification studies. Microstate analyses of EEG sources can be performed determine the important spatiotemporal characteristics signals. Such used cluster rapidly changing into multiple brain prototype topographies, fully utilizing information contained providing a neural representation for emotional dynamics. To better utilize signals, source localization analysis on was first conducted. Then, microstate source-reconstructed is conducted extract features data. We participant data from odor-video physiological signal database (OVPD-II) dataset. The experimental results show that feature topologies different participants under same exhibited high degree correlation, proven by topographic maps comparison two-dimensional visualization differential entropy (DE) power spectral density (PSD). represent more abstract robust. extracted were then with style transfer mapping method domain target support vector machines (SVMs) convolutional networks (CNNs) recognition. accuracies SVMs 84.90 ± 8.24% 87.43 7.54%, 7.19 6.95% higher than those obtained PSD 0.51 1.79% DE features. In CNN, average 86.44 91.49%, 7.71 19.41% 2.7 11.76%
Language: Английский
Citations
3