Tsuji Toshio

J-GLOBAL         Last updated: Aug 19, 2019 at 02:40
Tsuji Toshio
Hiroshima University
Job title
Doctor of Engineering(Hiroshima University), Master of Engineering(Hiroshima University)
Research funding number


Toshio Tsuji received the B.E. degree in industrial engineering, and the M.E. and D.Eng. degrees in systems engineering from Hiroshima Uni versity, Hiroshima, Japan, in 1982, 1985, and 1989, respectively.
He was a Research Associate from 1985 to 1994, and an Associate Professor from 1994 to 2002, in the Faculty of Engineering,Hiroshima University. He was a Visiting Professor at the University of
Genova, Genova, Italy, from 1992 to 1993. He is currently a Professor in the Department of System Cybernetics, Hiroshima University. His current research interests focus on human-machine interface and computational neural sciences, in particular, biological motor control. Dr. Tsuji received the Best Manipulation Paper Award from IEEE International Conference on Robotics and Automation in 2000, the K. S. Fu Memorial Best Transactions Paper Award of the IEEE Robotics and Automation Society in 2003, and the Best Conference Paper Award - Finalist from IEEE International Conference on Robotics and Automation in 2004.

Research Areas


Academic & Professional Experience

Apr 1985
Apr 1994
Research Associate, Faculty of Engineering, Hiroshima University
May 1994
Mar 2001
Associate Professor, Faculty of Engineering, Hiroshima University
Apr 2002
Professor, Graduate School of Engineering, Hiroshima University


Apr 1982
Mar 1985
System Engineering, Graduate School, Division of Engineering, Hiroshima University
Apr 1978
Mar 1982
Cluster 2 (Electrical, Electronical, System and Information Engineering), Industrial Engineering course, Faculty of Engineering, Hiroshima University

Committee Memberships

Jan 2018
Feb 2018
The Fourth International Symposium on Signal Processing and Intelligent Recognition Systems (SIRS'18), Technical Program committee, member
Feb 2018
Jul 2018
The 13th World Congress on Intelligent Control and Automation (WCICA2018), Program committee, member
Feb 2018
Dec 2018
IEEE  Sixth International Symposium on Intelligent Informatics (ISI'18) co-affiliated with the Seventh IEEE International Conference on Advances in Computing, Communications and Informatics (ICACCI'18), Technical program committee, member
Apr 2018
Mar 2019
International Organizing Committee of International Symposium on Artificial Life and Robotics, member
Jul 2018
Oct 2018
Third Symposium on Signal Processing for Wireless and Multimedia Communications (SPWMC'18), Technical program committee, member

Awards & Honors

Apr 2004
A Human-Assisting Manipulator Teleoperated by EMG Signals and Arm Motions, IEEE 2003 King-Sun Fu Memorial Best Transactions Paper Award
Oct 2006
Cybernetic Interface : Bio-Remote, Good Design Award

Published Papers

Human Hand Impedance Characteristics during Maintained Posture in Multi-Joint Arm Movements
Biological Cybernetics   72 475-485   Apr 1995
Further insight into the task-dependent excitability of motor evoked potentials in first dorsal interosseous muscle in humans
Experimental Brain Research   140 387-396   Apr 2001   [Refereed]
Pattern Classification of Time-series EMG Signals Using Neural Networks
International Journal of Adaptive Control and Signal Processing   14(8) 829-848   Apr 2000   [Refereed]
Parallel and Distributed Trajectory Generation of Redundant Manipulators through Cooperation and Competition among Subsystems
IEEE Transactions on Systems, Man, and Cybernetics-Part B : Cybernetics   27(3) 498-509   Apr 1997   [Refereed]
Distributed Trajectory Generation for Multi-Arm Robots via Virtual Force Interactions
IEEE Transactions on Systems= Man= and Cybernetics-Part B : Cybernetics   27(5) 862-868   Apr 1997   [Refereed]
Neural Network Learning of Robot Arm Impedance in Operational Space
IEEE Transactions on Systems= Man= and Cybernetics-Part B : Cybernetics   26(2) 290-298   Apr 1996   [Refereed]
Rolling Based Manipulation for Multiple Object
IEEE Transactions on Robotics and Automation   16(5) 457-468   Oct 2000   [Refereed]
Internal forces and stability in multi-finger grasps
IFAC Journal Control Engineering Practice   7 413-422   Apr 1999   [Refereed]
A Log-Linearized Gaussian Mixture Network and Its Application to EEG Pattern Classification
IEEE Transactions on Systems, Man, and Cybernetics-Part C: Applications and Reviews   29(7) 60-72   Apr 1999   [Refereed]
Non-Contact Impedance Control for Redundant Manipulators
IEEE Transactions on Systems, Man, and Cybernetics-Part A: Systems and Humans   29(2) 184-193   Apr 1999   [Refereed]
Hierarchical Control of End-Point Impedance and Joint Impedance for Redundant Manipulators
IEEE Transactions on Systems, Man, and Cybernetics-Part A: Systems and Humans   29(6) 627-636   Apr 1999   [Refereed]
Vision Based Active Sensor Using a Flexible Beam
Proceedings of the 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics   173-178   Apr 1999   [Refereed]
Active Antenna for Contact Sensing
IEEE Transactions on Robotics and Automation   14(2) 278-291   Apr 1998   [Refereed]
Adaptive Control and Identification Using One Neural Network for a Class of Plant with Uncertainties
IEEE Transactions on Systems, Man, and Cybernetics-PartA: Systems and Humans   28(4) 496-505   Apr 1998   [Refereed]
Multi-Point Impedance Control for Redundant Manipulators
IEEE Transactions on Systems= Man and Cybernetics - Part B   26(10) 707-718   Apr 1996   [Refereed]
Active Force Closure for Multiple Objects
Journal of Robotic Systems   19(3) 133-141   Apr 2002   [Refereed]
Bio-mimetic Trajectory Generation of Robots via Artificial Potential Field with Time Base Generator
IEEE Transactions on Systems, Man, and Cybernetics-Part C: Applications and Reviews   32(4) 426-439   Nov 2002   [Refereed]
Excitability Changes of Motor Evoked Potentials Dependent on Muscle Properties and Contraction Modes
Motor Control   17(4) 323-345   Apr 2003   [Refereed]
A Human-Assisting Manipulator Teleoperated by EMG Signals and Arm Motions
IEEE Transactions on Robotics and Automation   19(2) 210-222   Apr 2003   [Refereed]
EMG-Based Motion Discrimination Using a Novel Recurrent Neural Network
Journal of Intelligent Information Systems   21(2) 113-126   Apr 2003   [Refereed]
Further Insights into Post-exercise Effects on H-Reflexes and Motor Evoked Potentials of the Flexor Carpi Radialis Muscles
Motor Control   7(1) 82-99   Apr 2003   [Refereed]
A Recurrent Log-linearized Gaussian Mixture Network
IEEE Transactions on Neural Networks   14(2) 304-316   Mar 2003   [Refereed]
On-line Learning of Virtual Impedance Parameters in Non-contact Impedance Control Using Neural Networks
IEEE Transactions on Systems, Man, and Cybernetics-Part B: Cybernetics   2112-2118   Oct 2004   [Refereed]
LMI Based Neurocontroller for State-Feedback Guaranteed Cost Control of Discrete-Time Uncertain System
IEICE Transactions on Information and Systems   E88-D(8) 1903-1911   Sep 2005   [Refereed]
Biomimetic Trajectory Generation Based on Human Movements with a nonholonomic constraint
IEEE Transactions on Systems, Man, and Cybernetics-Part A: Systems and Humans   32(6) 773-779   Nov 2002   [Refereed]
Pattern discrimination method with a boosting approach using hierarchical neural trees
Journal of Systems and Control Engineering   222(7) 701-710   Jul 2008
Kaneko, M; Shirai, T; Tsuji, T
This paper discusses the scale-dependent grasp. Suppose that a human approaches an object initially placed on a table and finally achieves an enveloping grasp. Under such initial and final conditions, he (or she) unconsciously changes the grasp st...
Maruishi, M; Tanaka, Y; Muranaka, H; Tsuji, T; Ozawa, Y; Imaizumi, S; Miyatani, M; Kawahara, J
NEUROIMAGE   21(4) 1604-1611   Apr 2004   [Refereed]
Neuroimaging data, particularly functional magnetic resonance imaging (fMRI) findings, have not been reported in users of the myoelectric or electromyographic (EMG) prosthetic hand. We developed a virtual EMG prosthetic hand system to eliminate mu...
A design of neural-net based PID controllers with evolutionary computation
Suzuki, M; Yamamoto, T; Tsuji, T
PID control schemes have been widely used for many industrial processes, which can be represented by nonlinear systems. In this paper a new scheme for neural-net based PID controllers is presented. The connection weights and some parameters of the...
Tsuji, T; Takeda, Y; Tanaka, Y
BIOLOGICAL CYBERNETICS   91(5) 295-305   Nov 2004   [Refereed]
The dynamic characteristics of human upper extremities are usually expressed by mechanical impedance. Although many studies have discussed human impedance characteristics, there are no reports on control abilities of task-related impedance in skil...
Yahagi, S; Takeda, Y; Ni, Z; Takahashi, M; Tsuji, T; Komiyama, T; Maruishi, M; Muranaka, H; Kasai, T
EXPERIMENTAL BRAIN RESEARCH   161(2) 255-264   Feb 2005   [Refereed]
The goal of this study was to investigate how corticospinal tract neurons (CTNs) are modulated after repetitive dynamic muscle contractions. To address this question, changes of motor evoked potentials (MEPs) to transcranial magnetic stimulation a...
Tanaka, Y; Tsuji, T; Sanguineti, V; Morasso, PG
JOURNAL OF ROBOTIC SYSTEMS   22(11) 625-637   Nov 2005   [Refereed]
This paper presents a neural time-base generator (TBG) that can generate a family of neural control signals with a controllable finite duration and bell-shaped velocity profile. Then, a bio-mimetic trajectory generation method using the neural TBG...
Tsuji, T; Tanaka, Y
Human-robotic systems that include interaction between human operators and robots should be designed with careful consideration for the dynamic property and control ability of a human operator. This paper performs manual tracking control tests on ...
Tsuji, T; Tanaka, Y
ROBOTICS AND AUTONOMOUS SYSTEMS   52(4) 257-271   Sep 2005   [Refereed]
Impedance control is an effective control method for a manipulator that is in contact with its environment. Nevertheless, the characteristics of force and motion control are determined by impedance parameters of the end-effector of the manipulator...
Suzuki, M; Tsuji, T; Ohtake, H
ARTIFICIAL INTELLIGENCE IN MEDICINE   35(1-2) 75-86   2005   [Refereed]
Objective: Living organisms have mechanisms to adapt to various conditions of external environments. If we can realize these mechanisms on the computer, it may be possible to apply methods of biological and biomimetic adaptation to the engineering...
Ni, Z; Takahashi, M; Yamashita, T; Liang, N; Tanaka, Y; Tsuji, T; Yahagi, S; Kasai, T
EXPERIMENTAL BRAIN RESEARCH   170(2) 141-148   Apr 2006   [Refereed]
The present study was performed to examine if there are functional differences between the first dorsal interosseous (FDI) and the abductor digit minimi (ADM) muscles during different muscle contractions, namely dynamic and static contractions of ...
Ni, Zhen; Liang, Nan; Takahashi, Makoto; Yamashita, Takamasa; Yahagi, Susumu; Tanaka, Yoshiyuki; Tsuji, Toshio; Kasai, Tatsuya
EUROPEAN JOURNAL OF NEUROSCIENCE   23(12) 3399-3406   Jun 2006   [Refereed]
The present study examined whether there were different voluntary drives between intended and non-intended muscle contractions. In experiment 1, during intended and non-intended muscle contractions, electromyograms (EMGs) were recorded from the fi...
Shiba, Kenji; Nukaya, Masayuki; Tsuji, Toshio; Koshiji, Kohji
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING   55(1) 205-213   Jan 2008   [Refereed]
This paper reports on the current density and specific absorption rate (SAR) analysis of biological tissue surrounding an air-core transcutaneous transformer for an artificial heart. The electromagnetic field in the biological tissue is analyzed b...
Shiba, Kenji; Nagato, Tomohiro; Tsuji, Toshio; Koshiji, Kohji
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING   55(7) 1864-1871   Jul 2008   [Refereed]
This paper reports on the electromagnetic influences on the analysis of biological tissue surrounding a prototype energy transmission system for a wireless capsule endoscope. Specific absorption rate (SAR) and current density were analyzed by elec...
Tsuji, Toshio; Tanaka, Yoshiyuki
ROBOTICS AND AUTONOMOUS SYSTEMS   56(4) 306-316   Apr 2008   [Refereed]
A human performs a variety of skillful movements by adjusting dynamic characteristics of his or her musculoskeletal system according to a task involved. Such characteristics of human movements can be described by mechanical impedance parameters. I...
Tanaka, Yoshiyuki; Fujimura, Naoki; Tsuji, Toshio; Maruishi, Masaharu; Muranaka, Hiroyuki; Kasai, Tatsuya
EXPERIMENTAL BRAIN RESEARCH   193(1) 143-150   Feb 2009   [Refereed]
Although neuroimaging studies indicate that functional magnetic resonance imaging (fMRI) signal changes in the cerebellum (CB) during the performance of a target movement reflect functions of error detection and correction, it is not well known ho...
Shima, Keisuke; Tsuji, Toshio; Kandori, Akihiko; Yokoe, Masaru; Sakoda, Saburo
SENSORS   9(3) 2187-2201   Mar 2009   [Refereed]
This paper proposes a method to quantitatively measure and evaluate finger tapping movements for the assessment of motor function using log-linearized Gaussian mixture networks (LLGMNs). First, finger tapping movements are measured using magnetic ...
Suzuki, Michiyo; Sakashita, Tetsuya; Yanase, Sumino; Kikuchi, Masahiro; Ohba, Hirofumi; Higashitani, Atsushi; Hamada, Nobuyuki; Funayama, Tomoo; Fukamoto, Kana; Tsuji, Toshio et al.
JOURNAL OF RADIATION RESEARCH   50(2) 119-125   Mar 2009   [Refereed]
Locomotory behavior (motility) and mechanosensation are of vital importance in animals. We examined the effects of ionizing radiation (IR) on locomotory behavior and mechanosensation using a model organism, the nematode Caenorhabditis elegans. Bac...
Bu, Nan; Okamoto, Masaru; Tsuji, Toshio
IEEE TRANSACTIONS ON ROBOTICS   25(3) 502-511   Jun 2009   [Refereed]
In a human-robot interface, the prediction of motion, which is based on context information of a task, has the potential to improve the robustness and reliability of motion classification to control prosthetic devices or human-assisting manipulato...
Kutluk, Abdugheni; Tsuji, Toshio; Ukawa, Teiji; Nakamura, Ryuji; Saeki, Noboru; Yoshizumi, Masao; Kawamoto, Masashi
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING   48(4) 351-359   Apr 2010   [Refereed]
This paper proposes a new method of evaluating autonomic nervous activity using the mechanical impedance of arterial walls and heart rate variability. The cardiovascular system is indispensable to life maintenance functions, and homeostasis is mai...
Okamoto, Masaru; Matsubara, Yukihiro; Shima, Keisuke; Tsuji, Toshio
This paper proposes a new electromyogram (EMG) pattern classification, method using probabilistic neural networks based on boosting approach [1]. Since the proposed method automatically constructs a suitable classification network front measured E...
Tsuji, Toshio; Suzuki, Michiyo; Takiguchi, Noboru; Ohtake, Hisao
ARTIFICIAL LIFE   16(2) 155-177   2010   [Refereed]
In the field of molecular biology, extending now to the more comprehensive area of systems biology, the development of computer models for synthetic cell simulation has accelerated extensively and has begun to be used for various purposes, such as...
Kandori, Akihiko; Sano, Yuko; Miyashita, Tsuyoshi; Okada, Yoshihisa; Irokawa, Masataka; Shima, Keisuke; Tsuji, Toshio; Yokoe, Masaru; Sakoda, Saburo
REVIEW OF SCIENTIFIC INSTRUMENTS   81(5)    May 2010   [Refereed]
We have developed the simple estimation method of a finger tapping dynamics model for investigating muscle resistance and stiffness during tapping movement in normal subjects. We measured finger tapping movements of 207 normal subjects using a mag...
Murata, Kohji; Fujita, Etsunori; Kojima, Shigeyuki; Maeda, Shinitirou; Ogura, Yumi; Kamei, Tsutomu; Tsuji, Toshio; Kaneko, Shigehiko; Yoshizumi, Masao; Suzuki, Nobutaka
Systems capable of monitoring the biological condition of a driver and issuing warnings during instances of drowsiness have recently been studied. Moreover, many researchers have reported that biological signals, such as brain waves, pulsation wav...
Soh, Zu; Tsuji, Toshio; Takiguchi, Noboru; Ohtake, Hisao
CHEMICAL SENSES   36(5) 413-424   Jun 2011   [Refereed]
This paper proposes a neural network model for prediction of olfactory glomerular activity aimed at future application to the evaluation of odor qualities. The model's input is the structure of an odorant molecule expressed as a labeled graph, and...
Theoretical and Evolutionary Parameter Tuning of Neural Oscillators with a Double-Chain Structure for Generating Rhythmic Signals
Hattori, Yuya; Suzuki, Michiyo; Soh, Zu; Kobayashi, Yasuhiko; Tsuji, Toshio
NEURAL COMPUTATION   24(3) 635-675   Mar 2012   [Refereed]
A neural oscillator with a double-chain structure is one of the central pattern generator models used to simulate and understand rhythmic movements in living organisms. However, it is difficult to reproduce desired rhythmic signals by tuning an en...
Akdogan, Erhan; Shima, Keisuke; Kataoka, Hitoshi; Hasegawa, Masaki; Otsuka, Akira; Tsuji, Toshio
This paper proposes the cybernetic rehabilitation aid (CRA) based on the concept of direct teaching using tactile feedback with electromyography (EMG)-based motor skill evaluation. Evaluation and teaching of motor skills are two important aspects ...
Ukawa, Teiji; Takayanagi, Tsuneo; Morimoto, Haruka; Higashi, Yukihito; Idei, Naomi; Yoshizumi, Masao; Tsuji, Toshio
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING   50(12) 1239-1247   Dec 2012   [Refereed]
Measurement of flow-mediated dilatation (FMD) is the conventional non-invasive method for assessment of endothelial function; however, it requires an expensive ultrasound system and high levels of technical skill. Therefore, we developed a novel m...
Shibanoki, Taro; Shima, Keisuke; Tsuji, Toshio; Otsuka, Akira; Chin, Takaaki
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING   60(3) 853-861   Mar 2013   [Refereed]
This paper proposes a novel variable selection method involving the use of a newly defined metric called the partial Kullback-Leibler (KL) information measure to evaluate the contribution of each variable (dimension) in the data. In this method, t...
Idei, Naomi; Ukawa, Teiji; Kajikawa, Masato; Iwamoto, Yumiko; Fujimura, Noritaka; Maruhashi, Tatsuya; Mikami, Shinsuke; Matsumoto, Takeshi; Kihara, Yasuki; Chayama, Kazuaki et al.
ATHEROSCLEROSIS   229(2) 324-330   Aug 2013   [Refereed]
Background: It is clinically important to estimate the degree of endothelial dysfunction. Several methods have been used to assess endothelial function in humans. Recently, we developed a new noninvasive method for measurement of vascular response...
Soh, Zu; Kitayama, Shigehisa; Hirano, Akira; Tsuji, Toshio
Particular attention has recently been paid to bioassay systems that allow the responses of living organisms to be monitored to support water quality evaluation. This technology can complement traditional chemical inspection methods, which have li...
A Comparison Between the Human Sense of Smell and Neural Activity in the Olfactory Bulb of Rats
Zu Soh, Maki Saito, Yuichi Kurita, Noboru Takiguchi, Hisao Ohtake, Toshio Tsuji
Chemical Senses   39(2) 91-105   Nov 2013   [Refereed]
Vehicle Active Steering Control System Based on Human Mechanical Impedance Properties of the Arms
Yoshiyuki Tanaka, Naoki Yamada, Toshio Tsuji, Takamasa Suetomi
IEEE Transactions on Intelligent Transportation Systems   15(4) 1758-1769   Aug 2014   [Refereed]
A Recurrent Probabilistic Neural Network with Dimensionality Reduction Based on Time-series Discriminant Component Analysis
Hideaki Hayashi, Taro Shibanoki, Keisuke Shima, Yuichi Kurita, Toshio Tsuji
IEEE Transactions on Neural Networks and Learning Systems   (99) DOI: 10.1109/TNNLS.2015.240044   Feb 2015   [Refereed]
Analysis of Operational Comfort in Manual Tasks Using Human Force Manipulability Measure
Yoshiyuki TANAKA, Kazuo NISHIKAWA, Naoki YAMADA, Toshio TSUJI
IEEE Transactions on Haptics   8(1) 8-19   Mar 2015   [Refereed]
Okahara, S.; Tsuji, T.; Ninomiya, S.; Miyamoto, S.; Takahashi, H.; Soh, Z.; Sueda, T.
PERFUSION-UK   30(6) 478-483   Sep 2015   [Refereed]
The viscosity obtained from pressure-flow characteristics of an oxygenator may help to detect factors that change oxygenator resistance. The objective of this study was to model pressure-flow characteristics of a membrane oxygenator with an integr...
Kutluk, Abdugheni; Tsuji, Toshio; Hamit, Murat; Nakamura, Ryuji; Saeki, Noboru; Higashi, Yukihito; Kawamoto, Masashi; Yoshizumi, Masao
Endothelial dysfunction is an initial stage in atherosclerosis, and is associated with cardiovascular disease. In this study, the authors proposed a new method to evaluate response in reactive hyperemia with viscoelastic indices including those of...
Kandori, Akihiko; Sano, Yuko; Zhang, Yuhua; Tsuji, Toshio
REVIEW OF SCIENTIFIC INSTRUMENTS   86(12)    Dec 2015   [Refereed]
This paper describes a new method for calculating chest compression depth and a simple chest-compression gauge for validating the accuracy of the method. The chest-compression gauge has two plates incorporating two magnetic coils, a spring, and an...
Takaki, T.; Shima, K.; Mukaidani, N.; Tsuji, T.; Otsuka, A.; Chin, T.
ADVANCED ROBOTICS   29(24) 1586-1598   Oct 2015   [Refereed]
This paper proposes an electromyographic (EMG) prosthetic hand that has five independently driven fingers, a flexion drive, and a force-magnification drive. The flexion drive allows for rapid finger motion, and the force-magnification drive allows...
Sano, Yuko; Kandori, Akihiko; Shima, Keisuke; Yamaguchi, Yuki; Tsuji, Toshio; Noda, Masafumi; Higashikawa, Fumiko; Yokoe, Masaru; Sakoda, Saburo
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING   54(6) 953-965   Jun 2016   [Refereed]
We propose a novel index of Parkinson's disease (PD) finger-tapping severity, called PDFTsi," for quantifying the severity of symptoms related to the finger tapping of PD patients with high accuracy. To validate the efficacy of PDFTsi, the finger-...
Eguchi, Kohei; Kashima, Hideaki; Yokota, Akiko; Miura, Kohei; Endo, Masako Yamaoka; Hirano, Harutoyo; Tsuji, Toshio; Fukuba, Yoshiyuki
AUTONOMIC NEUROSCIENCE-BASIC & CLINICAL   197 41-45   May 2016   [Refereed]
Little is known about the effect of sweet taste stimulus on gastrointestinal motility and splanchnic blood flow. We examined whether gastric myoelectrical activity and/or celiac artery blood flow (CABF), which perfuses the stomach, are increased f...
Kurita, Yuichi; Sueda, Yamato; Ishikawa, Takaaki; Hattori, Minoru; Sawada, Hiroyuki; Egi, Hiroyuki; Ohdan, Hideki; Ueda, Jun; Tsuji, Toshio
IEEE-ASME TRANSACTIONS ON MECHATRONICS   21(6) 2624-2634   Dec 2016   [Refereed]
Haptic information is crucial in the execution of precise dexterous manipulations. Laparoscopic surgery, a type of minimally invasive surgery, requires that the surgeon senses force information about tissue through forceps, because he or she canno...
Morimoto, Haruka; Kajikawa, Masato; Oda, Nozomu; Idei, Naomi; Hirano, Harutoyo; Hida, Eisuke; Maruhashi, Tatsuya; Iwamoto, Yumiko; Kishimoto, Shinji; Matsui, Shogo; Aibara, Yoshiki; Hidaka, Takayuki; Kihara, Yasuki; Chayama, Kazuaki; Goto, Chikara; Noma, Kensuke; Nakashima, Ayumu; Ukawa, Teiji; Tsuji, Toshio; Higashi, Yukihito
Background-A new device for automatic measurement of flow-mediated vasodilation (FMD) using an oscillometric method has been developed to solve technical problems of conventional FMD measurement. This device measures enclosed zone FMD (ezFMD). The...
Soh, Zu; Nishikawa, Shinya; Kurita, Yuichi; Takiguchi, Noboru; Tsuji, Toshio
PLoS One   11(12)    Dec 2016   [Refereed]
To predict the odor quality of an odorant mixture, the interaction between odorants must be taken into account. Previously, an experiment in which mice discriminated between odorant mixtures identified a selective adaptation mechanism in the olfac...
Okahara, Shigeyuki; Soh, Zu; Miyamoto, Satoshi; Takahashi, Hidenobu; Itoh, Hideshi; Takahashi, Shinya; Sueda, Taijiro; Tsuji, Toshio
ARTIFICIAL ORGANS   41(3) 262-266   Mar 2017   [Refereed]
During cardiopulmonary bypass (CPB), blood viscosity conspicuously increases and decreases due to changes in hematocrit and blood temperature. Nevertheless, blood viscosity is typically not evaluated, because there is no technology that can provid...
Okahara, Shigeyuki; Soh, Zu; Miyamoto, Satoshi; Takahashi, Hidenobu; Takahashi, Shinya; Sueda, Taijiro; Tsuji, Toshio
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING   64(7) 1503-1512   Jun 2017   [Refereed]
This paper proposes an algorithm that estimates blood viscosity during cardiopulmonary bypass (CPB) and validates its application in clinical cases. The proposed algorithm involves adjustable parameters based on the oxygenator and fluid types and ...
Furui, Akira; Hayashi, Hideaki; Nakamura, Go; Chin, Takaaki; Tsuji, Toshio
PLOS ONE   12(6)    Jun 2017   [Refereed]
This paper proposes an artificial electromyogram (EMG) signal generation model based on signal-dependent noise, which has been ignored in existing methods, by introducing the stochastic construction of the EMG signals. In the proposed model, an EM...
A Human Reaching Movement Model for Myoelectric Prosthesis Control
Nakamura, Go; Shibanoki, Taro; Honda, Yuichiro; Masuda, Akito; Mizobe, Futoshi; Chin, Takaaki; Tsuji, Toshio
This paper proposes a reaching movement model for the generation of desired trajectories within a myoelectric prosthesis training system. First, an experiment was performed to observe reaching movements with a non-impaired subject and a myoelectri...
An Estimation Method for Environmental Friction Based on Body Dynamic Model of Caenorhabditis elegans
Soh, Zu; Suzuki, Michiyo; Tsuji, Toshio
Caenorhabditis elegans is a small worm which is approximately 1 mm in length. The present study proposes an estimation method for frictional force using locomotion information obtained from video analysis of actual worms. The results indicate that...
Obstacle Avoidance Method for Electric Wheelchairs Based on a Multi-Layered Non-Contact Impedance Model
Kokubo, Haruna; Shibanoki, Taro; Chin, Takaaki; Tsuji, Toshio
This paper proposes an obstacle avoidance method based on a multi-layered non-contact impedance model for control of the biosignal-based electric wheelchair. The proposed system can calculate a virtual repulsive force before the collision by multi...
A Voice Signal-Based Manipulation Method for the Bio-Remote Environment Control System Based on Candidate Word Discriminations
Shibanoki, Taro; Nakamura, Go; Chin, Takaaki; Tsuji, Toshio
This paper proposes a voice signal-based manipulation method for the Bio-Remote environment control system. The proposed system learns relationships between multiple candidate words' phonemes extracted by a largevocabulary speaker-independent mode...
Nakamura, Go; Shibanoki, Taro; Kurita, Yuichi; Honda, Yuichiro; Masuda, Akito; Mizobe, Futoshi; Chin, Takaaki; Tsuji, Toshio
This article proposes a virtual hand and a virtual training system for controlling the MyoBock-the most commonly used myoelectric prosthetic hand worldwide. As the virtual hand is controlled using the method also adopted for the MyoBock hand, the ...
Hayashi, Hideaki; Furui, Akira; Kurita, Yuichi; Tsuji, Toshio
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING   64(11) 2672-2681   Nov 2017   [Refereed]
Objective: This paper describes the formulation of a surface electromyogram (EMG) model capable of representing the variance distribution of EMG signals. Methods: In the model, EMG signals are handled based on a Gaussian white noise process with a...
Kurita, Yuichi; Sato, Jumpei; Tanaka, Takayuki; Shinohara, Minoru; Tsuji, Toshio
IEEE TRANSACTIONS ON HUMAN-MACHINE SYSTEMS   47(6) 1158-1163   Dec 2017   [Refereed]
Studies suggest that the level of muscle activation may influence force reproduction. The purpose of this study was to develop a sensorimotor-enhancing suit (SEnS)-unpowered assistive clothing without actuators or electrical devices-and to examine...
Ogawa, Kazunori; Thakur, Chetan; Ikeda, Tomohiro; Tsuji, Toshio; Kurita, Yuichi
ADVANCED ROBOTICS   31(21) 1135-1143   Nov 2017   [Refereed]
Assistive suits reduce human muscle effort by improving human motion. However, most assistive suits are bulky, are expensive, need external power sources, and are impractical to carry everywhere. We present the development of the pneumatic gel mus...
Elbegzaya, Sukhdorj; Nakamura, Ryuji; Saeki, Noboru; Yanabe, Kensuke; Kutluk, Abdugheni; Hirano, Hiroki; Hirano, Harutoyo; Tsuji, Toshio; Kawamoto, Masashi
JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING   37(6) 820-825   Dec 2017   [Refereed]
Blood flow monitoring systems such as photoplethysmogram (PPG) and laser Doppler flowmetry (LDF) are useful for intraoperative determination of a successful endoscopic thoracic sympathectomy (ETS) procedure, as they are able to indicate a sympatho...
Force and Motion Analysis of larval zebrafish (Danio rerio) using a body dynamics model
Mukaidani, Naohisa; Soh, Zu; Higashijima, Shinichi; Tsuji, Toshio
This study proposes a method of body dynamics analysis for larval zebrafish incorporating a viscoelastic body model and a fluidic environment model to support the study of development mechanisms in motion generation. The results showed that the es...
Matsubara, Hiroki; Hirano, Hiroki; Hirano, Harutoyo; Soh, Zu; Nakamura, Ryuji; Saeki, Noboru; Kawamoto, Masashi; Yoshizumi, Masao; Yoshino, Atsuo; Sasaoka, Takafumi; Yamawaki, Shigeto; Tsuji, Toshio
SCIENTIFIC REPORTS   8    Feb 2018   [Refereed]
In clinical practice, subjective pain evaluations, e.g., the visual analogue scale and the numeric rating scale, are generally employed, but these are limited in terms of their ability to detect inaccurate reports, and are unsuitable for use in an...
Das, Swagata; Kishishita, Yusuke; Tsuji, Toshio; Lowell, Cassie; Ogawa, Kazunori; Kurita, Yuichi
IEEE ROBOTICS AND AUTOMATION LETTERS   3(3) 2416-2423   Jul 2018   [Refereed]
The upper limb of the human body has a higher likeliness of getting affected by muscle fatigue and injury, due to repetitive motion. This letter presents an interactive glove for the wrist of the human body. The assistivemodel is enabled with pneu...
Yanabe, Kensuke; Nakamura, Ryuji; Saeki, Noboru; Sukhdorj, Elbegzaya; Kutluk, Abdugheni; Hirano, Hiroki; Hirano, Harutoyo; Yoshizumi, Masao; Tsuji, Toshio; Kawamoto, Masashi
MINERVA ANESTESIOLOGICA   84(3) 311-318   Mar 2018   [Refereed]
BACKGROUND: Reliable analgesia monitoring is not available for general anaesthesia cases. In 2003, we introduced a method to characterise arterial mechanical properties, which we termed arterial stiffness (K). However, it is unclear whether differ...
Hirano, Harutoyo; Takama, Renjo; Matsumoto, Ryo; Tanaka, Hiroshi; Hirano, Hiroki; Soh, Zu; Ukawa, Teiji; Takayanagi, Tsuneo; Morimoto, Haruka; Nakamura, Ryuji; Saeki, Noboru; Hashimoto, Haruki; Matsui, Shogo; Kishimoto, Shinji; Oda, Nozomu; Kajikawa, Masato; Maruhashi, Tatsuya; Kawamoto, Masashi; Yoshizumi, Masao; Higashi, Yukihito; Tsuji, Toshio
SCIENTIFIC REPORTS   8    Jun 2018   [Refereed]
This paper proposes a novel non-invasive method for assessing the vascular endothelial function of lower-limb arteries based on the dilation rate of air-cuff plethysmograms measured using the oscillometric approach. The principle of evaluating vas...
Analysis of movement of carotid artery using template matching
Shinji KUME, Toshinori MATSUSHIGE, Seiji HAMA, Shigeyuki SAKAMOTO, Takahito OKAZAKI, Junpei OHSHITA, Daizo ISHII, Shota MIZUGUCHI, Zu SOH, Toshio TSUJI, Kaoru KURISU
Neurosonology   30(3) 139-143   Mar 2017   [Refereed]
A new method for early detection of infants at risk of long-term neuromotor disabilities
E. Maggi, M. Impagliazzo, A. Minnella, N. Zanardi, M. Izzo, F. Campone, I. Blanchi, C. Tacchino, K. Shimatani, K. Shima, T. Tsuji, P. Giannoni, M. M. Fato, P. Morasso, M. Casadio, L. Ramenghi, and P. Moretti
Gait & Posture   57 23-24   Sep 2017   [Refereed]
Soh, Zu; Matsuno, Motoki; Yoshida, Masayuki; Tsuji, Toshio
ZEBRAFISH   15(2) 133-144   Apr 2018   [Refereed]
Fear and anxiety in fish are generally evaluated by video-based behavioral analysis. However, it is difficult to distinguish the psychological state of fish exclusively through video analysis, particularly whether the fish are freezing, which repr...
Ichinose, Nobuhiko; Hama, Seiji; Tsuji, Toshio; Soh, Zu; Hayashi, Hideaki; Kiura, Yoshihiro; Sakamoto, Shigeyuki; Okazaki, Takahito; Ishii, Daizo; Shinagawa, Katsuhiro; Kurisu, Kaoru
JOURNAL OF NEUROSURGERY   128(5) 1280-1288   May 2018   [Refereed]
OBJECTIVE Carotid artery stenting (CAS) has been considered to prevent ischemic strokes caused by stenosis of the cervical carotid artery. The most common complication of CAS is new cerebral infarction. The authors have previously reported that th...
A Training Method for the Speech Controlled Environmental Control System Based on Candidate Word Discriminations
Shibanoki, Taro; Watanabe, Masaki; Nakamura, Go; Chin, Takaaki; Tsuji, Toshio
This paper proposes a concept of a training system for the speech controlled environmental control system: Bio-Remote based on candidate word discriminations. The proposed system can provide three-types of voice signal training: (1) volume, (2) te...
Umayahara, Yasutaka; Soh, Zu; Sekikawa, Kiyokazu; Kawa, Toshihiro; Otsuka, Akira; Tsuji, Toshio
SENSORS   18(7)    Jul 2018   [Refereed]
Cough peak flow (CPF) is a measurement for evaluating the risk of cough dysfunction and can be measured using various devices, such as spirometers. However, complex device setup and the face mask required to be firmly attached to the mouth impose ...
Ogawa, Kazunori; Kadowaki, Akito; Shimatani, Koji; Hasegawa, Masaki; Takahashi, Keita; Tsuji, Toshio; Kurita, Yuichi
JOURNAL OF ROBOTICS AND MECHATRONICS   30(5) 729-739   Oct 2018   [Refereed]
As muscle weakness due to aging or fatigue potentially increases the risk of injuries or accidents, support wears may be needed that can play a role in assisting various motions. Recently, research and development of such support wears have gained...
Soh, Zu; Sakamoto, Kazuma; Suzuki, Michiyo; Iino, Yuichi; Tsuji, Toshio
SCIENTIFIC REPORTS   8    Nov 2018   [Refereed]
The small roundworm Caenorhabditis elegans employs two strategies, termed pirouette and weathervane, which are closely related to the internal representation of chemical gradients parallel and perpendicular to the travelling direction, respectivel...
Umayahara, Yasutaka; Soh, Zu; Sekikawa, Kiyokazu; Kawae, Toshihiro; Otsuka, Akira; Tsuji, Toshio
SENSORS   18(11)    Nov 2018   [Refereed]
Although cough peak flow (CPF) is an important measurement for evaluating the risk of cough dysfunction, some patients cannot use conventional measurement instruments, such as spirometers, because of the configurational burden of the instruments. ...
Development of Myoelectric Robotic/Prosthetic Hands with Cybernetic Control at the Biological Systems Engineering Laboratory, Hiroshima University
Tsuji, Toshio; Shibanoki, Taro; Nakamura, Go; Furui, Akira
JOURNAL OF ROBOTICS AND MECHATRONICS   31(1) 27-34   Feb 2019   [Refereed]
This review introduces our developed robotic/ prosthetic hands and explains the myoelectric control of the robotic hand with five fingers, which is based on muscle synergy and a motion generation model. To realize a "human-like" robotic hand, it i...
Shima, Keisuke; Tsuji, Toshio; Kandori, Akihiko; Yokoe, Masaru; Sakoda, Saburo
IEEE-ASME TRANSACTIONS ON MECHATRONICS   24(1) 186-196   Feb 2019   [Refereed]
In this study, a magnetic sensor consisting of two coils was used to measure and evaluate finger tapping (FT) movements for diagnosis support and assessment of motor function. The sensor enables estimation of the distance between the two coil-bear...
Tanaka, Hiroshi; Mito, Akihisa; Hirano, Harutoyo; Soh, Zu; Nakamura, Ryuji; Saeki, Noboru; Kawamoto, Masashi; Higashi, Yukihito; Yoshizumi, Masao; Tsuji, Toshio
SCIENTIFIC REPORTS   9    Feb 2019   [Refereed]
This paper proposes an algorithm for estimating the arterial viscosity using cuff pressures and pulse waves measured by an automatic oscillometric sphygmomanometer. A change in the arterial viscosity during the enclosed-zone flow-mediated dilation...
Okamoto, Yoshihisa; Sasaoka, Takafumi; Yoshida, Toshihiro; Takemura, Kazuhiro; Soh, Zu; Nouzawa, Takahide; Yamawaki, Shigeto; Tsuji, Toshio
IEEE-ASME TRANSACTIONS ON MECHATRONICS   24(2) 549-560   Apr 2019   [Refereed]
A major hurdle in the development of automobiles that are easy to operate and pleasant to drive is ignorance of the influence of the characteristics of the steering force on the driver based on an understanding of the brain. To address this proble...
Kishishita, Yusuke; Takemura, Kazuhiro; Yamada, Naoki; Hara, Toshihiro; Kishi, Atsuhide; Nishikawa, Kazuo; Nouzawa, Takahide; Tsuji, Toshio; Kurita, Yuichi
IEEE TRANSACTIONS ON HAPTICS   11(4) 590-598   Dec 2018   [Refereed]
Humans feel forces or weights while grasping and manipulating an object. There is a difference between the physical and perceived forces because the physical characteristics of an object and/or human psychophysical characteristics affect perceived...

Books etc

Robot Control Handbook
Toshio TSUJI, Osamu Fukuda (Part:Joint Work)
Dec 2017   ISBN:978-4-7649-0473-6
Handbook of Research on Biomimetics and Biomedical Robotics
Taro Shibanoki and Toshio Tsuji (Part:Joint Work)
IGI Global   Dec 2017