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Recently the number of people with swallowing disorders (dysphagia) is increasing. Therefore, efforts are needed to support the swallowing process of dysphagia patients. In order to assist the swallowing process, understanding the initial phase is important. As the first step of development, we analyzed muscle activities related to the initial phase of the swallowing process. In this research, muscle...
This paper presents a synchronous kinesthetic interaction among people through haptic input/output based on biosignal measurement and stimulation. Users are able to bi-directionally transmit kinesthetic experiences such as rigidity of joints or exertion of muscles in addition to physical bodily motion. Such interaction would be very important in the fields of rehabilitation and sports training. In...
Social Playware is regarded as cyber-physical systems to support and enhance the experiences on play and social interaction among people by measuring and presenting physical contacts, spatial movement and facial expression. Several wearable or modular devices are used in this study, which enable behavior and affective measurements. It is aimed not only to integrate cyber and physical spaces by using...
In this paper we present the design of a wearable device that reads positive facial expressions using physiological signals. We first analyze facial morphology in 3 dimensions and facial electromyographic signals on different facial locations and show that we can detect electromyographic signals with high amplitude on areas of low facial mobility on the side of the face, which are correlated to ones...
This study proposes a novel method to change the apparent stiffness of a mechanical link system according to the given magnetic field. We propose an elastic link mechanism integrated with a magnetorheological (MR) fluid that can be controlled by the current of an electrical coil. The potential applications of the proposed device include sports training, physiotherapy, and motor rehabilitation. Compared...
Biofeedback is currently considered as an effective method for medical rehabilitation. It aims to increase the awareness and recognition of the body's motion by feeding back the physiological information to the patients in real time. Our goal is to create an auditory biofeedback that aids understanding of the dynamic motion involving multiple muscular parts, with the ultimate aim of clinical rehabilitation...
This paper presents part of an on-going project to design a wearable supportive device to enhance facial expressiveness, in particular for the facial paralyzed patients. Earlier we introduced the SMA actuator based Robot Mask that can be used to enhance the expressiveness of the face. The basic concept of that design was pulling of the skin through wires attached to the face and we explained the human...
Analysis of muscle activity by electrophysiological techniques is commonly used to analyze biomechanics. Although the simultaneous and intuitive understanding of both muscle activity and body motion is important in various fields, it is difficult to realize. This paper proposes a novel technique for visualizing physiological signals related to muscle activity by means of surface electromyography....
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