How to analise EMG signals?5 answersTo analyze electromyography (EMG) signals, various methods are employed. One approach involves mathematical modeling to simulate muscle fiber trajectories and derive action potentials, aiding in signal interpretation and validation of processing techniques. Another method includes using surface or needle electrodes to register bioelectrical signals from muscles, which can then be analyzed for myopathic or neuropathic lesions through numerical parameters. Additionally, surface EMG signals can be processed by extracting features, applying dimensionality reduction techniques, and utilizing machine learning classifiers for movement classification. Furthermore, artificial intelligence algorithms based on big data can be utilized for bio-signal analysis, enabling simpler and more accurate interpretation of EMG signals, especially when dealing with noise-induced variations.
What are the most commonly used techniques for processing and analyzing EMG signals in clinical research?5 answersSurface electromyography (EMG) signals in clinical research are commonly processed using feature extraction, dimensionality reduction techniques, and machine learning classifiers. Additionally, artificial neural networks (ANNs) are utilized for pattern identification in EMG signal recordings, enabling interaction with technological devices. Frequency analysis of EMG signals aids in movement classification, with methods like Hilbert envelope and Fast Fourier Transform (FFT) coefficients being employed for signal processing. These techniques allow for the extraction of valuable information from EMG signals, facilitating applications in clinical diagnostics, prosthetic device monitoring, biomedicine, and human-machine interactions. The integration of these methods showcases the versatility and effectiveness of EMG signal processing in various clinical research settings.
Can emg data from throat be used to recognize alphabet production using machine learning?5 answersEMG data from the throat can be used to recognize alphabet production using machine learning. A novel throat-language decoding system (TLDS) has been proposed, which captures signals of throat vibration using flexible, low-cost, and self-powered sensors. The system extracts time-frequency dynamics features and nonlinear dynamics features from the throat vibration signals and applies a machine learning classifier for recognition. The TLDS achieved satisfactory results in recognizing letters, with an average accuracy of 90.55% for single-person recognition and 87.26% for multi-person recognition. This approach provides a promising solution for individuals who cannot speak, enabling them to communicate conveniently using throat vibration signals.
How Filter based Feature Selection to cancer biomarker selection from microarray gene expression data?4 answersFilter-based feature selection methods are commonly used to select relevant genes from microarray gene expression data for cancer biomarker selection. These methods aim to identify the most significant features (genes) that contribute to disease classification. Several studies propose different filter feature selection techniques to address the high dimensionality and noisy nature of microarray data. For example, Waleed Ali and Faisal Saeed propose a hybrid filter-genetic feature selection approach that combines filter feature selection methods with a genetic algorithm to enhance cancer classification performance. Another study by Dr. Sheela T. et al. suggests a two-layered feature selection method that uses t-test and line segment approximation to reduce dimensionality and improve classification accuracy. Chenyu Ge proposes the FSRL method, which integrates fisher-score, recursive feature elimination, and logistic regression to search for biomarkers in various cancers. Zhi-Ping Liu et al. propose the EFSmarker method, which combines twelve filter feature selection methods and logistic regression to identify biomarkers for breast cancer. These studies demonstrate the effectiveness of filter-based feature selection in cancer biomarker selection from microarray gene expression data.
How can deep learning be used to classify arm motions using EMG signals?5 answersDeep learning techniques, such as Deep Recurrent Neural Networks (DRNN), Convolutional Neural Networks (CNN), and Temporal Multi-Channel Vision Transformers, have been used to classify arm motions using Electromyographic (EMG) signals. These signals are recorded from the forearm muscles and contain valuable information about the performed gestures. The deep learning models are trained on datasets consisting of EMG signals recorded during different arm motions. The models extract discriminant features from the raw EMG data and classify the gestures with high accuracy. The classification accuracies range from 84.98% to 99.12% for different datasets and number of classes. The proposed deep learning approaches outperform traditional machine learning algorithms and show significant improvements in classification accuracy and time complexity.
What are the uses of EMG in swimming?5 answersElectromyography (EMG) has various uses in swimming. It can be used to evaluate activity patterns and swimming strategies of fishes, such as sea lampreys. EMG telemetry can also be used as a rescue alarm system for swimming pools, where the safety of the swimmer is determined by signals emitted by an electromagnetic wave transmitter. In competitive swimming, EMG can be used to investigate training devices and methods. Additionally, intramuscular EMG can be used to determine and compare the recruitment patterns of different muscles in rats. Furthermore, EMG can be used in functional electrical stimulation (FES) to support swimming in individuals with spinal cord injuries. FES-supported swimming can improve swimming velocity and body position in paraplegics.