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This paper proposed a novel outlier detection method, named l1-regularized outlier isolation and regression (LOIRE), to examine torque-related transient patterns of in vivo muscle behavior from multimodal signals, including electromyography (EMG), mechanomyography (MMG) and ultrasonography (US), during isometric muscle contraction. Eight subjects performed isometric ramp contraction of knee up to...
The study is aimed to investigate in vivo behaviors of the rectus femoris muscle during isometric contraction by integrating simultaneously recorded electromyography (EMG), mechanomyography (MMG), and ultrasonography (US). We developed an experimental platform for simultaneous acquisition of EMG, MMG, US, as well as the torque, during isometric muscle contraction. Features from multimodal signals...
The purpose of this study was to investigate the electromyography (EMG), mechanomyography (MMG), and the muscle architecture, i.e. cross-sectional area (CSA), amplitude versus torque relationships during voluntary isometric ramp contractions. The ultrasound images, EMG and MMG signals were simultaneously recorded from the rectus femoris (RF) muscle. A novel image processing algorithm was developed...
Nowadays, most of the commercial upper-limb externally powered prosthetic devices are controlled by electromyography (EMG) signal. It is detected from the remaining muscles of amputated arms to control the prostheses. However, there are some inherent limitations of EMG control, such as muscle cross talk. On the other hand, it has been demonstrated that the muscle thickness change collected by ultrasound...
Electromyography (EMG) and ultrasonography have been widely used for skeletal muscle assessment. The muscle thickness change detected using ultrasound has been recently defined as sonomyography. In this study, the performances of one dimensional sonomyography (1-D SMG) and surface EMG signal in tracking the guided patterns of wrist extension were compared, and the potential of 1-D SMG for skeletal...
Ultrasound and electromyography (EMG) are two of the most often used diagnostic tools for muscles. However, there is lack of a system for continuously capturing both signals with a synchronized procedure. This study presents a new system for this purpose. The system comprises an ultrasound scanner, a pulser/receiver, an EMG amplifier, and a PC with A/D converter cards for data acquisition and analysis...
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