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The experiment is to investigate the reliability of two different mechanomyogram (MMG) sensors recording during functional electrical stimulation (FES)-evoked contraction. The MMG based sensors used in this study are vibromyography (VMG) and muscle contraction (MC) sensor. One spinal cord injured (SCI) patient was requested to perform knee extension movements during two sessions of isotonic exercise...
It is important to close the control loop by providing tactile feedback to prosthesis users. An increasing number of researchers attempt to improve grasping performance by providing various types of tactile feedbacks. In our study, we improve the performance by a virtual environment in which subjects acquire two key grasping-related properties, including object's stiffness, economically holding power...
This paper focuses on the volitional contraction's impact on Functional Electrical Stimulation (FES). Hammerstein model, which combines static nonlinearity, isometric response curve (IRC), and dynamical linearity, is a common model to present the muscle response to electrical stimulation. We utilized the responses to a pseudo-random binary sequence (PRBS) excitation to identify the static nonlinearity...
We examined the stability of the ankle joint moment (AM) and M-wave amplitude evoked by electrical stimulation of the gastrocnemius and soleus muscle. The use of functional electrical stimulation (FES) is associated with some problems, including the fact that the muscle activity evoked by electrical stimulation decreases with muscle fatigue. Also, when electrical stimulation is delivered via surface...
This paper presents a study protocol for comparing the effectiveness of two different configurations of multi-pad electrode array (MEA) in functional electrical stimulation (FES)-evoked cycling. In this study protocol, muscular force produced by quadriceps and the duration of achieving muscular fatigue would be compared between two different stimulation configurations of MEA. The first configuration...
A pilot investigation was conducted on the measurement of muscle performance during voluntary exercise using a novel mechanomyogram muscle contraction sensor quantifying muscle tension — the MC-Sensor (TMG-BMC Ltd. Ljubljana, Slovenia). Surface electromyography (sEMG) and the torque output from an isokinetic dynamometer were used as reference for comparative assessment of the MC-sensor data. Five...
The present work shows a preliminary study conducted using Vibromyography (VMG) sensor and Electromyography (EMG) sensor with the help of Biodex system on evaluating muscle performances. Surface EMG and Biodex torque are set as reference signal to be compared with VMG signal obtained from the experiment. A total of 5 healthy subjects performed isokinetic knee extension exercise at the speed of 90...
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