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In this paper, the thickness change of biceps brachii during the fatigue process is continuously monitored using one micro-size single-element ultrasound transducer and analyzed by the echo tracking algorithm. We focus on isometric, 50 % maximum voluntary contraction (MVC) of the elbow. Four subjects participates in the experiment and the result shows that the muscle thickness of biceps brachii continues...
In this study, we propose a novel method to explore the relationship between grip force and forearm muscle thickness during isometric contraction. One-directional ultrasound was used to detect the depth of muscle-bone interface. By tracking the movement of this interface, the change of muscle thickness can be calculated. A dynamometer was used to measure force. Three able-bodied subjects were asked...
This paper describes an air-coupled ultrasound system by using DIO-2000. The system is aimed to use for inner muscle evaluation in rehabilitation process. The system evaluates inner muscle with low constrain than conventional method which measured by using MR image, X-ray CT and contacted ultrasound system. Our air-coupled ultrasound system measures transmitted ultrasound wave with very low power...
This paper compared the performances of the surface electromyography (sEMG) with Ultrasound(US) signals in finger motion recognition. Compared to traditional sEMG-based human machine interface (HMI), the ultrasound can provide some information about the morphological changes of muscles and has higher resolution. It is possible for the US-based HMI to recognize some more dexterous hand gesture especially...
In this paper we introduce a novel Wearable Ultrasound Radial Muscle Activity Detection System (WURMADS) and a demonstration of its ability to recognize forearm muscle activities of amputee subjects to control a dexterous prosthetic hand. The system consists of control electronics to capture and record the ultrasound echo signals in real-time and two wearable bands embedded with eight ultrasound transducers...
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