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Dexterous object manipulation requires suitable control of grip force, load force and digit positions. To keep an object stable in the air, force magnitude, force direction and digit positions should be coordinated, producing compensatory torque that could balance the external torque and maintain a minimal object roll. Six males and 6 females enrolled in the study. In the experiment, subjects were...
This paper proposes the improvement method of operability in a bilateral control by using visual information. The bilateral control system consists of a master system which is manipulated by the operator and a slave system which contacts remove environment. Considering the actual use of the bilateral control, the operator manipulates the master system while watching the visual information from the...
In this paper we describe how to use a Game-Based Learning (GBL) approach to help end-user programmers to develop Computational Thinking (CT) skills. CT represents a framework consisting of a set of skills such as: abstraction, decomposition and more in general problem solving expressed in a computational form (algorithmic thinking) that can be easily formalised into a computer program. Those skills...
We explored the affordances of using visuo-haptic simulations to improve conceptual understanding and representational competence of the concept of friction. Visuohaptic simulations are computer-based simulations that encode mathematical and physical models of certain phenomena and provide visual and tactile feedback. Users can see the simulation and feel the friction with their hand by using a special...
The tonic postural system guarantees the stability of the human body in upright stance and during locomotion. It is considered as a complex organization which involves several internal systems and has multiple sources of information. In this paper, we provide a review of techniques and materials for human stability assessment. The primary tools to record and evaluate human sways in static posture...
Task outcome feedback is often used to sustain human work motivation and ensure overall productivity. Feedback can also be useful for reducing learning periods for new tasks. Two types of feedback, including knowledge of results (KR) and knowledge of performance (KP), are commonly delivered as part of motor training by using various sensory modalities (e.g., visual, auditory or kinesthetic). Unfortunately,...
Master-slave surgical robots have been studied and developed to support surgeons. Robotic functions such as motion scaling and hand shaking correction can extend the ability of surgeons. However, some problems are remaining in robotic surgery. Operation time which can become the burden to surgeons is still long. Surgeons must assess the situation, decide the next task correctly, and achieve tasks...
Haptic skills are essential for effective Cardiopulmonary Resuscitation (CPR). Existing CPR training simulators provide unrealistic chest conditions. It is assumed that the CPR performance on a real human chest is the same even when the trainees have learnt on unrealistic dummy chests. To test this assumption we have developed an immersive Virtual Reality based CPR simulator in which force feedback...
The haptic illusion based force feedback, known as pseudo-haptics, is used to simulate haptic explorations, such as stiffness, without using a force feedback device. There are many computer mouse based pseudo-haptics work reported in the literature. However, none has explored the mechanics of the pseudohaptics. The objective of this paper is to derive an analytical relation between the displacement...
The standing balance undergoes declines with aging that contributes the fall of the elderly. But the age-related balance control during quiet standing upon a slope has not been fully understood. This study aimed to investigate the effects of aging on muscle activation during quiet standing on a slope with different angles. Sixteen healthy young subjects and 16 healthy elderly subjects participated...
Acoustic droplet vaporization (ADV) is a process when a droplet is converted into a gaseous bubble under ultrasound (US) stimulation. Our previous study has shown that the mechanical force generated by ADV can release drugs and disrupt vessels. It would result in the streaming intact droplets leaking into tissue. In addition, the intact droplets may occur ADV process by subsequent US stimulation....
Physical interactions between human and machine are essential in facilitating effective physical therapy training programs. Nowadays, physical training largely involves robotic assistive devices or wearable haptics. In this study, we propose a lightweight wearable sensory augmentation device using skin stretch feedback to provide individuals with additional sensory cues during balance training. The...
Humans are vulnerable to cognitive biases such as neglect of probability, framing effect, confirmation bias, conservatism (belief revision) and anchoring. Argument Mapper addresses these biases in intelligence analysis by providing an easy-to-use, theoretically sound, web-based interactive software tool that enables the application of evidence-based reasoning to analytic questions. Designed in collaboration...
Industrial robots are introduced in not only large enterprises but also small and medium enterprises (SMEs). Professional engineers are required when introducing and maintaining industrial robots. However, sometimes it is difficult for SMEs to do this by themselves because of economical limitations. Therefore, in many cases, they need to ask the outside for the support. To assist this situation, an...
Objective measurement is an essential part of the assessment process in neurological dysfunction such as stroke. However, current clinical scores are insensitive and based on subjective observation from experts. Technology provides an opportunity for enhanced accuracy and specificity of objective measurement. This study describes the use of an interactive force-sensitive table-top platform for the...
Aiming at the drawback of not being able to take into account of imaging range and imaging precision simultaneously for an common atomic force microscopy (AFM), a method based on the automatic image stitching is proposed to construct the global visual field of an AFM. In detail, the scanning rule and corresponding image stitching strategy is firstly designed to structure the overall layout for the...
This paper presents some theoretical and experimental physio-pathological aspects of certain behaviors on patient bipodal posture. In the first part of paper, aspects of ocular physio-pathology are presented in relation to the level and form of impaired visual function of the patient. Experimental structure and the evaluation are issues presented in the second part of the paper. Experimental structure...
This paper proposes an immersive visuo-haptic display system composed of an easy-to-carry and light-weight passive haptic device and an HMD. We employ visuo-haptic interaction to control a wide range of perceived stiffness without using mechanical actuators that would inevitably make the device bulky and power-consuming. Via an HMD a user sees his or her own rendered hand with its finger flexion that...
Children with hemiplegia have movements' difficulties especially in their upper limbs, these difficulties occur due to the loss of the communication between the brain and the affected side of the body. In this study, visual, audio, and tactile stimulation were provided to the patients to reactivate the communication between their brains and their affected upper limbs. Haptic stimulation control strategy...
Sensory dysfunction can be a major contributor to persistent symptoms after a mild traumatic brain injury (mTBI). There are many possible sensory dysfunctions; most impact posture and gait. This leads to increased cognitive processing demands to compensate, possible sensory inattention to the environment often resulting in increased symptomology and activity avoidance. With this project, we hope to...
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