Shunta Togo,Ph.D

Assistant Professor, Graduate School of Informatics and Engineering, The University of Electro-Communications

Email: s.togo uec.ac.jp

  

NEWS

  • 06/09/2017
  • Research article entitled “Empirical evaluation of voluntarily activatable muscle synergies” is published in Frontiers in Computational Neuroscience[link].

  • 31/03/2017
  • Research article entitled “Control strategy of hand movement depends on target redundancy” is published in Scientific Reports[link].

  • 01/02/2017
  • Research article entitled “Maintenance of Muscle Contraction Improves during Dynamic Exercise by Multi-channel Functional Electrical Stimulation with Time Shifting Stimulation” is published in IJBBB[link].

  • 12/09/2016
  • Research article entitled “Anticipatory synergy adjustments reflect individual performance of feedforward force control” is published in Neuroscience Letters[link].

  • 12/07/2016
  • Research article entitled “Uncontrolled Manifold Reference Feedback Control of Multi-Joint Robot Arms” is published in Frontiers in Computational Neuroscience[link].

  • 01/04/2016
  • I took up a post as assistant proffesor of The University of Electro-Communicationcs. -->

PROFILE

  • Name

    Shunta Togo

  • Affiliation

    Assistant Professor
    Department of Mechanical Engineering and Intelligent Systems
    Graduate School of Informatics and Engineering
    The University of Electro-Communications

  • Degree

    Doctor of Engineering (Nagoya University)

  • Other affiliatuin

    Brain Science Inspired Life Support Research Center (BLSC), The Unibersity of Electro-Communications
    Coopeerative researcher, Cognitive Mechanisms Laboratories, Advanced Telecommunications Research Institute International
    Reseacher, Medical Institute of Developmental Disabilities Research, Showa University

  • External site

    Research Map
    Research Gate

Career

  • Apr. 1, 2011 - Mar. 31, 2012, COE Research Assistant
  • Apr. 1, 2012 - Mar. 31, 2014, Japan Society for the Promotion of Science Research fellow (DC2)
  • Apr. 1, 2014 - Mar. 31, 2016, Japan Society for the Promotion of Science Research fellow (PD)
  • Apr. 1, 2014 - present, Coopeerative researcher, Cognitive Mechanisms Laboratories, Advanced Telecommunications Research Institute International
  • Feb. 1, 2016 - present, Reseacher, Medical Institute of Developmental Disabilities Research, Showa University
  • Apr. 1, 2016 - present, Assistant professor, Graduate School of Informatics and Engineering, The University of Electro-Communications

Academic background

  • Apr. 1, 2005 - Mar. 31, 2009, Department of Mechanical Science and Engineering, School of Engineering, Nagoya Unoviersity
  • Apr. 1, 2009 - Mar. 31, 2011, Master's program, Department of Mechanical Schience and Engineering, Graduate School of Engineering, Nagoya University
  • Apr. 1, 2011 - Mar. 31, 2014, Doctoral program, Department of Mechanical Schience and Engineering, Graduate School of Engineering, Nagoya University

Membership

RESEARCH

How do we control our body? Reaching, grasping and raising the cup in front of you. Though these movements are unintentional actions, we should solve many kinds of problems when we control the robot achieving the same movement. For the most familiar and interesting problems, I study from the point of view of

Computational NeuroscienceRobotics

A computer controls robot movements. I consider that a human "brain" also controls body movements, and study the control mechanisms of human movements. The aims of my study are to elucidate the control mechanism of human movement and to control the robot as dexterous as human.

Elucidation of mechanism of multi-joint coordination

Though our body consists of many joints, we dexterously "coordinate" each joint without paying special attention. For example, when we reach to the same target repeatedly, we can move our hand to same position with different joint commbination and posture. In such a case, variability of one joint is compensated by "coordiantion" of other joints so as to stabilize the hand position. This kind of movement is defined as "multi-joint coordination", and I measure and analyze the actual human multi-joint movements.

Elucidation of control mechanism of multi-muscle

When we flex one joint, e.g., elbow joint, many muscles simultaneously are activated. In this case, does the "brain" individually control each muscle? Or, control "modules" consisting of functionally similar muscles? The hypothetical "module" is called the "muscle synergy", and I study whether the human uses the muscle synergy to control redundant muscles.

Coordinated control of robot

I try to control the redundant robot arm as the human multi-joint coordination. Since the task-irrelevant variability is allowed by the joint coordination, the human can achieve the motor task every time even though different postures. We would be able to flexibly control the robot by allowing task-irrelevant variability of joint. I propose a control model that can allow variability of joint, and apply to the robot control.

Quantitative evaluation of Developmental Coordination Disorder

Autism spectrum disorder (ASD) is often complicated by developmental coordination disorder (DCD). However, a method of quantitative evaluation of DCD has not been established. I quantitatively evaluate the DCD from point of view of coordinated movements analysis. Moreover, I approach the neuroscientific mechanism of ASD and DCD based on the findings from evaluation experiments.

Approach to the redundancy problem

For example, we reach to the vertical pole in the train. In this case, movements in the direction towrd the pole are carefully controlled, because the hand should stop at the pole. In contrast, don't you pay attention to the movements along the pole? We can naturally grasp the pole without payng attention to the movements along the pole. The underspecified problem is called redundancy problem, and I study how the human deals with the redundancy problem.

Elucidation of mechanism of dampening hand vibration

At lunch, you put water into a cup, and carry to your seat. Though your cup is full of water, you can carry a cup without spilling water by paying "some" attention. But, you can not verbally explain how to dampen vibration of water in the cup. I focus on one of the human dexterous movements, dampening hand vibratinon, and study the control mechanism.

PUBLICATIONS

Journal Papers

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[13] Shunta Togo and Hiroshi Imamizu, "Empirical Evaluation of Voluntarily Activatable Muscle Synergies”, Frontiers in Computational Neuroscience, Vol.11, No.82, 2017. doi:10.3389/fncom.2017.00082 [Link]
[12] Shunta Togo, Toshinori Yoshioka and Hiroshi Imamizu, "Control strategy of hand movement depends on target redundancy”, Scientific Reports, Vol.7, No.45722, 2017. doi:10.1038/srep45722 [Link]
[11] Rintaro Kamihira, Misato Kasuya, Yinlai Jiang, Shunta Togo, Masao Sugi and Hiroshi Yokoi, "Maintenance of Muscle Contraction Improves during Dynamic Exercise by Multi-channel Functional Electrical Stimulation with Time Shifting Stimulation”, International Journal of Bioscience, Biochemistry and Bioinformatics (IJBBB), Vol.7, No.1, pp.30-40, 2017. doi: 10.17706/ijbbb.2017.7.1.33-40 [Link]
[10] Shunta Togo and Hiroshi Imamizu, "Anticipatory synergy adjustments reflect individual performance of feedforward force control”, Neuroscience Letters, Vol.632, pp.192-198, 2016. doi: 10.1016/j.neulet.2016.08.032 [Link]
[9] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Uncontrolled manifold reference feedback control of multi-joint robot arms”, Frontiers in Computational Neuroscience, Vol.10, No.69, 2016. doi: 10.3389/fncom.2016.00069 [Link]

[8] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Changes in motor synergies for tracking movement and responses to perturbations depend on task-irrelevant dimension constraints”, Human Movement Science, Vol.46, pp.104-116, 2016. doi: 10.1016/j.humov.2015.12.010 [Link]
[7] Shunta Togo and Hiroshi Imamizu, "Normalized Index of Synergy for Evaluating the Coordination of Motor Commands”, PLoS ONE, Vol.10, No.10, e0140836, 2015. doi: 10.1371/journal.pone.0140836 [Link]
[6] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Control model for dampening hand vibrations using information of internal and external coordinates”, PLoS ONE, Vol.10, No.4, e0125464, 2015. doi: 10.1371/journal.pone.0125464 [Link]
[5] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Change of a motor synergy for dampening hand vibration depending on a task difficulty", Experimental Brain Research, Vol.232, No.10, pp.3101-3109, 2014. doi: 10.1007/s00221-014-3994-x [Link]
[4] Shunta Togo, Takahiro Kagawa and Yoji Uno, "UCM reference feedback control for coordinated motion of a redundant joint arm", IEICE Transaction on Information and Systems, Vol.J96-D,No.2,pp.346-356,2013.(in Japanese)

[3] Shunta Togo, Takahiro Kagawa and Yoji Uno, "A role of visual information for joint coordination to dampen hand vibration during walking", IEICE Transaction on Information and Systems, Vol.J95-D,No.2,pp.314-322,2012. (in Japanese)
[2] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Motor synergies for dampening hand vibration during human walking", Experimental Brain Research, Vol.216, No.1, pp.81-90, 2012. doi: 10.1007/s00221-011-2909-3 [Link]
[1] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Uncontrolled manifold analysis for strategy of dampening hand vibration during human walking", IEICE Transaction on Information and Systems, Vol.J93-D, No.12, pp.2666-2674, 2010. (in Japanese)

International Conference

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[12] Shunta Togo and Hiroshi Imamizu, "Experimental evaluation of voluntarily activatable muscle synergies", Neuroscience 2017, No.152.06, Washington, DC USA, December 2017. (Poster)
[11] Yuta Murai, Yoshiko Yabuki, Masahiro Ishihara, Takehiko Takagi, Shinichiro Takayama, Shunta Togo, Yinlai Jiang and Hiroshi Yokoi, "Designs of tailor-made myoelectric prosthetic hand for trans-metacarpal amputations with remaining fingers and joint moving functions", 2017 IEEE International Conference on Cyborg and Bionic Systems (CBS 2017), pp.119-124, Beijing China, October 2017. (Oral) Best Student Paper Award
[10] Chiaki Mizuochi, Yoshiko Yabuki, Yasuhiro, Mouri, Shunta Togo, Soichiro Morishita, Yinlai Jiang, Ryu Kato and Hiroshi Yokoi, "Real-time cortical adaptation monitoring system for prosthetic rehabilitation based on functional near-infrared spectroscopy", 2017 IEEE International Conference on Cyborg and Bionic Systems (CBS 2017), pp.130-135, Beijing China, October 2017. (Oral)
[9] Yinlai Jiang, Yuta Murai, Taihei Kuwahara, Shunta Togo, Yoshiko Yabuki and Hiroshi Yokoi, "Conductive silicon based sEMG sensor for myoelectric control of prosthetic hands: structure design and evaluation", The 2017 IEEE International Conference on Real-time Computing and Robotics (IEEE RCAR 2017), Okinawa Japan, July 2017. (Oral)
[8] Hesong Ye, Xiang Feng, Yoshiko Yabuki, Shunta Togo, Yinlai Jiang and Hiroshi Yokoi, "Force-magnification mechanism with artificial tendon sheath for myoelectric prosthetic hand for children", IEEE International Conference on robotics and biomimetics (ROBIO2016), SuC04.1, Qingdao China, December 2016. (Oral)

[7] Rintaro Kamihira, Misato Kasuya, Yinlai Jiang, Shunta Togo, Masao Sugi and Hiroshi Yokoi, "Maintenance of muscle contraction improves during dynamic exercise by multi-channel functional electrical stimulation with time shifting stimulation", International Conference on Biomedical Signal and Bioinformatics (ICBSB), AUT University, New Zealand, November 2016. (Oral) Excellent Paper Award & The best presentation award
[6] Shunta Togo, Takahiro Kagawa and Yoji Uno, "A control model of human-dampening hand vibration using internal and external information", Neural Control of Movement 25th Annual Meeting, 1-D-9, Francis Marion Hotel in Charleston SC USA, April 2015. (Poster)
[5] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Task and body constraints change joint coordination to dampen hand vibration", SICE ANNUAL CONFERENCE 2013, pp.1294-1295, Nagoya University in Japan, September 2013. (Oral)
[4] Shunta Togo, Takahiro Kagawa and Yoji Uno, "UCM reference feedback control for joint coordination", Progress in Motor Control IX, 31, McGill University in Montreal Canada, July 2013. (Poster)
[3] Shunta Togo, Takahiro Kagawa and Yoji Uno, "UCM analysis of human multi-joint coordination and mechanical arm impedance", Neural Control of Movement 22nd Annual Meeting, 1-B-103, Hilton Molino Stucky in Venice Italy, April 2012. (Poster)

[2] Shunta Togo, Takahiro Kagawa and Yoji Uno, "A role of visual information for joint coordination to dampen hand vibration during human walking", Progress in Motor Control VIII, 255, University of Cincinnati in OH USA, July 2011. (Poster)
[1] Shunta Togo, Takahiro Kagawa and Yoji Uno, "Analysis of synergy for dampening hand vibration during walking", 4th International Symposium on Measurement, Analysis and Modelling of Human Functions, pp.51-52, Czech Technical University in Prague, June 2010. (Oral)

Contact

  • Address

    1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
    The University of Electro-Communications, E4-601
    Google Map
  • E-mail

    s.togo uec.ac.jp
  • Phone

    +81-42-443-5869