the purpose of this study was to estimate the torque from high‑density surface electromyography signals of biceps brachii, brachioradialis, and the medial and lateral heads of triceps brachii muscles during moderate‑to‑high isometric elbow flexion‑extension. the elbow torque was estimated in two following steps: first, surface electromyography (emg) amplitudes were estimated using principal com...

The motor unit action potentials (MUAPs) sum to produce a spatial distribution of voltage on the skin surface above the muscle. This time varying “electrical image” may be acquired with an electrode grid that provides two dimensional (2D) sampling in space. The time evolution of the resulting “image” may be tracked by sampling in time. This methodology is referred to as High Density EMG (HD-EMG...

Electromyography computed tomography (EMG-CT) method is proposed for visualizing the individual muscle activities in the human forearm. An EMG conduction model was formulated for reverse-estimation of muscle activities using EMG signals obtained with multi surface electrodes. The optimization process was calculated using sequential quadratic programming by comparing the estimated EMG values fro...

This paper presents a five-fingered underactuated prosthetic hand controlled by surface electromyographic (EMG) signals. The prosthetic hand control part is based on an EMG motion pattern classifier which combines variable learning rate (VLR) based neural network with parametric Autoregressive (AR) model and wavelet transform. This motion pattern classifier can successfully identify flexion and...

In surface electromyography (surface EMG, or S-EMG), conduction velocity (CV) refers to the velocity at which the motor unit action potentials (MUAPs) propagate along the muscle fibers, during contractions. The CV is related to the type and diameter of the muscle fibers, ion concentration, pH, and firing rate of the motor units (MUs). The CV can be used in the evaluation of contractile properti...

Electromyogpraphic endotracheal tube (EMG tube) is a new device used to monitor recurrent laryngeal nerve integrity during thyroid surgery. The EMG tube has 2 pairs of electrodes on the surface of silicon-based tube reached to inner space of tube cuff. We experienced an unusual endotracheal tube-related problem from the distinct structural feature of the EMG tube. In this case, we intubated a p...

The aim of this study was to remove the two principal noises which disturb the surface electromyography signal (Diaphragm). These signals are the electrocardiogram ECG artefact and the power line interference artefact. The algorithm proposed focuses on a new Lean Mean Square (LMS) Widrow adaptive structure. These structures require a reference signal that is correlated with the noise contaminat...

Objectives This paper presents a technique for general quantitative evaluation of musculoskeletal impact through the evaluation of postural tests to assess two specific muscle groups. The two muscle groups chosen were the left upper trapezius, utilized while operating an ultrasound system’s control panel, and the right suprascapular fossa, utilized while scanning. Surface electromyography (SEMG...

In this paper we present our recent study on the impact of speaking mode variabilities on speech recognition by surface electromyography (EMG). Surface electromyography captures the electric potentials of the human articulatory muscles, which enables a user to communicate naturally without making any audible sound. Our previous experiments have shown that the EMG signal varies greatly between d...