Language：English   Publishing type：Research paper (international conference proceedings)

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85119955908&origin=inward

Language：English   Publishing type：Research paper (scientific journal)

DOI： 10.3390/philosophies6030054

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85112406093&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

DOI： 10.3390/philosophies6030060

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85112412732&origin=inward

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)

DOI： 10.1017/S0263574721001107

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85113745268&origin=inward

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)

<p>To improve the tactile VR technology, we researched the haptic device technology that can provide the material feeling to the palm of hand. We adopted Velvet Hand Illusion (VHI), which is one of the tactile illusion phenomena, and tried to control this sensation. Since it is necessary to create the model of VHI mechanism, we tried to formulate it by applying law of pragnanz in Gestalt theory, which is famous for visual research, to VHI. In the formulation, we focused on the basic VHI stimulus in which two parallel lines (wires) reciprocated between the palms and formulated the VHI intensity by using the phase difference of two parallel lines movement and the speed difference of the two lines as explanatory variables. We conducted the psychophysical experiment and verified this formulation. It was found that our proposed model can explain the relationship between VHI intensity and the stimulus conditions when there was no velocity difference between the two lines. On the other hand, in the condition that included phase and velocity difference, our model explained the relationship between them in only large velocity difference condition. This result suggests that the phase difference and the velocity difference are interrelated, and we should clarify the relationship between them to improve the prediction accuracy of VHI in the future.</p>

DOI： 10.1299/jsmeiip.2021.iip1b2-4

CiNii Article

CiNii Research

Other Link： https://www.jstage.jst.go.jp/article/jsmeiip/2021/0/2021_IIP1B2-4/_pdf

Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)

<p>In our previous study, we developed a fingernail color sensor capable of identifying the magnitude and direction of the force acted on fingers. The prototype is equipped with a small CMOS camera and green LEDs, and collected a dataset of vertical force and shear force acting on the index finger and fingernail color images using an electronic balance and a load cell. The dataset was trained by CNN to estimate forces from the images. In this study we produced individual CNN models, which learned individual fingernail color change data. RMSEs for nine human subjects were 0.12, 0.12 and 0.29 [N] for <i>F_x</i>, <i>F_y</i> and <i>F_z</i>, respectively. RMSEs of <i>F_x</i> and <i>F_y</i> are significantly smaller than those of previous studies.</p>

DOI： 10.1299/jsmemecj.2021.j162-02

CiNii Research

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

<p>To develop a tactile display, we focused on the Velvet Hand Illusion (VHI), which is a tactile illusion phenomenon. The most important feature of VHI is that VHI is not generated in one wire but is generated in two or more wires. This means that we recognize the area surrounded by wires as a Gestalt and a smooth surface sensation is generated in the Gestalt. We assume that the VHI mechanism is related to the law of closure and the law of common fate in Gestalt theory. In this paper, we investigate the relationship between VHI and the law of closure by means of variation in a phase difference of two wires’ cyclic movement, and formulate VHI variation, taking into account the law of closure. We try to divide the law of closure into two factors: one of them is a factor of translation and the other is a factor of elasticity. We formulate the tactile Gestalt and verify the validity of this formulation by comparing the result of the psychophysical experiment to the estimation via the formulation. This work shows that the law of closure in the tactile Gestalt consists of the translation factor and the elasticity factor, and the VHI mechanism is described by the formulation of the tactile Gestalt.</p>

DOI： 10.1299/jamdsm.2020jamdsm0088

Scopus

CiNii Article

CiNii Research

Other Link： https://ci.nii.ac.jp/naid/130007882189

Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)

<p>There is an illusion phenomenon called Velvet Hand Illusion (VHI), in which two steel wires are sandwiched between both hands and rubbed back and forth to create a smooth sensation on the palm. In order to quantitatively evaluate the touch feeling of VHI, a series of psychophysical experiments was performed using the SD method and factor analysis to obtain the psychophysical dimension of tactile perception. As a result, it was found that the difference in VHI sensation between the dot-matrix VHI and the wire VHI was caused by the influence of each stimulating material. It was also clarified that VHI was a phenomenon caused by integration rather than lateral inhibition.</p>

DOI： 10.1299/jsmemecj.2020.j16204

CiNii Article

CiNii Research

Other Link： https://www.jstage.jst.go.jp/article/jsmemecj/2020/0/2020_J16204/_pdf

Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)

<p>The kinesthetic illusion (KI) is an illusion that when a suitable vibration stimulus is applied to tendons or muscles, the stimuli tend to feel as if the stimulated tendons or muscles were stretched to move related limbs. In the previous study, we investigated the process of strengthening the moving image in the process of repeating experiments performed by naïve persons who have not experienced the motion illusion so far. An experiment in which a vibration stimulus was applied to the Flexor Carpal Radius (FCR) tendon of the right hand was repeated 5 times to confirm the training effect on KI, which was evaluated by the magnitude estimation method. In the present study, we investigated the effect of the rubber hand illusion (RHI) on the KI with displaying a movie of the wrist extension movement on a display placed in front of the arm.</p>

DOI： 10.1299/jsmemecj.2020.j16202

CiNii Article

CiNii Research

Other Link： https://www.jstage.jst.go.jp/article/jsmemecj/2020/0/2020_J16202/_pdf

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/MHS48134.2019.9249323

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85097773245&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/AIM.2019.8868657

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85074287147&origin=inward

Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

DOI： 10.4139/sfj.70.127

CiNii Article

CiNii Research

Other Link： http://id.ndl.go.jp/bib/029565280

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/VR.2019.8798033

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85071850763&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

DOI： 10.1299/jamdsm.2019jamdsm0051

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85072512605&origin=inward

Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

<p>　Actuation provides motion control of an object and acquires reaction force as <i>information</i> through the <i>motion</i>. We advocate a new network structure called informotion, which is a coin combining information and motion to express those intrinsic characteristics possessed by actuation. After we will summarize <i>informotionology</i> which becomes one of academic fields of the informotion, we will progress the control method of informotion network systems causing complex systems’ behavior due to variety of actuators, and then we introduce emotion control, which is one of the most effective applications of the informotion network. Using variety of actuators we will control human emotion such as comfort feeling, courage and confidence. In this report, we describe two examples. One of them is Kinesthetic Illusion (KI) inducing movement feeling of limbs, which is controlled through vibration caused by a voice coil motor. KI has a possibility to enhance peaceful feeling on distal radius fracture patients. The other is Velvet Hand Illusion (VHI) inducing soft and smooth virtual surfaces, which is controlled through an array of piezoelectric ceramic actuators. VHI strength is related to integration processing of information in brain followed through Gestalts.</p>

DOI： 10.14243/jsaem.27.383

CiNii Article

CiNii Research

Other Link： http://id.ndl.go.jp/bib/030144643

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)

<p>Smoothness is one of the important factors in controlling texture sensation in tactile VR. In previous research, we created the feeling of smoothness by utilizing Velvet Hand Illusion (VHI) which is one tactile illusion phenomenon. We adopted a dot-matrix display as a haptic device to clarify that VHI can be created in the dot-matrix display with the two parallel moving lines formed by the stimulus pins. From this result, it was clarified that we can perceive apparent motion in tactile sensation as well as visual sensation. In our more recent research we focus on the tactile Gestalt which consists of the two parallel moving lines. The tactile Gestalt is different from the visual Gestalt because we can recognize not only shapes such as a letter and a figure, but also smoothness in the tactile Gestalt. Since the dot-matrix display can create various dot patterns, it is possible to clarify the condition of the tactile Gestalt to generate VHI feeling. Therefore, in this research, we aim to clarify the basic characteristics of tactile Gestalt using the dot-matrix display. We investigate the relationship between the pins distance forming a line and VHI occurrence, and the absolute threshold of line length which is the trigger to generate VHI. As a result, the threshold of the distance between pins forming the line coincides with two point threshold of the palm. Also, the absolute threshold of the parallel line length is about 28 mm.</p>

DOI： 10.18974/tvrsj.24.1_43

CiNii Article

CiNii Research

Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

<p>In this paper, to put this research in context, we first provide a brief survey of the internet of things (IoT) and IoT-like networks. We then introduce our new actuator-sensor network, which is capable of obtaining environmental information through actuator movement configurations which rely on tribological contact. We coin a new word "informotion" which integrates "information" and "motion" to express the abovementioned situation; networks composed of informotion elements are called informotion network systems (INS), the controls of which are based on bio-inspired rules. As an example of INS developed in our laboratory,we introduce an actuator array capable of controlling smooth tactile feeling using the velvet hand illusion. If we accumulate adequate successful findings related to feeling control generated by INS, in future work we will work to increase the ease or comfort for individuals manipulating mechanical or robotic systems by improving the smoothness of tactile feel.</p>

DOI： 10.18914/tribologist.63.09_580

CiNii Article

CiNii Research

Other Link： http://id.ndl.go.jp/bib/029264331

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/CIVEMSA.2018.8439948

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85053135200&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/MHS.2017.8305179

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85050505765&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/IRIS.2017.8250103

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85047351807&origin=inward

Language：English   Publishing type：Research paper (scientific journal)

© 2018 Japanese Society of Tribologists. All Rights Reserved. In this paper, to put this research in context, we first provide a brief survey of the internet of things (IoT) and IoT-like networks. We then introduce our new actuator-sensor network, which is capable of obtaining environmental information through actuator movement configurations which rely on tribological contact. We coin a new word "informotion" which integrates "information" and "motion" to express the abovementioned situation; networks composed of informotion elements are called informotion network systems (INS), the controls of which are based on bio-inspired rules. As an example of INS developed in our laboratory, we introduce an actuator array capable of controlling smooth tactile feeling using the velvet hand illusion. If we accumulate adequate successful findings related to feeling control generated by INS, in future work we will work to increase the ease or comfort for individuals manipulating mechanical or robotic systems by improving the smoothness of tactile feel.

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85058211491&origin=inward

Language：English   Publishing type：Research paper (international conference proceedings)

DOI： 10.1115/ISPS-MIPE2018-8540

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85057219793&origin=inward

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056268906&origin=inward

Language：English   Publishing type：Research paper (scientific journal)

DOI： 10.1177/1729881416658170

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84993953544&origin=inward

Event date： 2023.01.25 - 2023.01.27   Language：English  

Event date： 2022.12.14 - 2022.12.16   Language：English   Country：Japan  

Event date： 2022.08.28 - 2022.08.31   Language：English  

Event date： 2022.08.28 - 2022.08.31   Language：English  

Event date： 2022.03.07 - 2022.03.08   Language：English   Country：Japan  

Event date： 2022.03.07 - 2022.03.08   Language：English  

Event date： 2022.03.07 - 2022.03.08   Language：English  

Event date： 2022.01.25 - 2022.01.27   Language：English   Country：Japan  

Event date： 2021.09.08   Language：Japanese  

Event date： 2021.03.08   Language：Japanese  

Event date： 2021.01.21   Language：English  

Event date： 2020.12   Language：English  

Event date： 2020.09.16   Language：Japanese  

Event date： 2020.09.14   Language：Japanese  

Event date： 2020.09.14   Language：Japanese  

Event date： 2019.12   Language：English  

Event date： 2019.07   Language：English  

Event date： 2019.04.25   Language：English  

Event date： 2019.04.25   Language：English  

Event date： 2019.03.27   Language：English  

Event date： 2018.08.30   Language：English  

Event date： 2018.06.12   Language：English