We studied on the feasibility of focused ultrasound for tactile feeling display. Our experiments showed that focused ultrasound at 1 MHz and 5 MHz effected our somatic sensation both by its radiation pressure and by direct stimulation to the nerve structures. The radiation pressure force generated by our apparatus was 0.23 gf/cm per 1-watt power consumption and evoked tactile feeling stably, wh...

OBJECTIVES Endodontically treated teeth (ETT) used as abutments for removable partial dental prostheses (RPDPs) have an increased fracture risk as compared to vital abutments. One suggested explanation is that ETT exhibit a lower threshold level for tactile sensitivity than vital teeth. Therefore, this study compared the threshold for tactile sensitivity of vital teeth and ETT in the same indiv...

Tactile displays are used to provide tactile feedback in telemanipulation or virtual reality. One aim in further developments is the miniaturisation of tactile displays for incorporation into dataand/or force feedback gloves. This enables the combination of tactile and kinesthetic feedback. A main disadvantage of many tactile displays with a large number of stimulator elements is their large vo...

Touch is one of the primary senses humans use when performing coordinated interaction, but the lack of a sense of touch in the majority of contemporary interactive technical systems, such as robots, which operate in non-deterministic environments, results in interactions that can at best be described as clumsy. Observing human haptics and extracting the salient information from the gathered dat...

Object manipulation is one of the important tasks in robotics. Tactile sensor system is essential as a sensory device to support robot control system. This paper present a precision control scheme of multi-fingered humanoid robot arm based on tactile sensing information to perform object manipulation tasks. With the aim to enhance the ability to recognize and manipulate object in humanoid robot...

OBJECTIVE The aim of this study was to compare tactile sensitivity and maximum voluntary bite force (MBF) of edentulous patients with implant-supported fixed dental prostheses (IFDP/IFDPs) to those wearing complete dentures (CG-CC) and fully dentate subjects (CG-DD). METHODS Seven edentulous subjects with IFDP/IFDPs, seven with CG-CC and seven CG-DD, matched for age and gender, participated i...

Since our tactile mouse can generate not only distributed pressure but also slippage force, it is expected that it can enhance the reality degree of virtual reality generated by it compared to conventional tactile displays. In previous works, this tactile mouse was effective for edge tracing of virtual figures. However, advanced tests are required using psychophysical experiments to evaluate th...

Haptics-enabled virtual reality technologies allow users to sense force feedback and tactile feedback while manipulating 3D objects. This paper proposes a haptic gaming system which can contribute to improve the ability for discerning tactile textures and 3D shapes by using force and tactile feedbacks of the users’ fingers. Our haptic gaming system consists of three games: “Haptic Puzzle” for t...